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See how genetically modified organisms are created.

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Bill Nye discusses the pros and cons of GMOs

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Bill Nye discusses the pros and cons of GMOs

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Moon & Discovered the Earth Neil deGrasse Tyson Explains

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The Pros and Cons of GMOs with Bill Nye & Chuck Nice

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Now that Bill Nye has famously changed his opinion about GMOs, a fan thinks Bill is the perfect person to discuss their pros and cons. Watch Bill Nye the Science Guy play devil's advocate and outline the beneficial and non-beneficial aspects of using GMOs.

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White blood cell, also called leukocyte or white corpuscle, a cellular component of the blood that lacks hemoglobin, has a nucleus, is capable of motility, and defends the body against infection and disease by ingesting foreign materials and cellular debris, by destroying infectious agents and cancer cells, or by producing antibodies.

What is a white blood cell?

What are the major classes of white blood cells?

What is a healthy white blood cell count?

A healthy adult human has between 4,500 and 11,000 white blood cells per cubic millimetre of blood. Fluctuations in white cell number occur during the day; lower values are obtained during rest and higher values during exercise. An abnormal increase in white cell number is known as leukocytosis, whereas an abnormal decrease in number is known as leukopenia. White cell count may increase in response to intense physical exertion, convulsions, acute emotional reactions, pain, pregnancy, labour, and certain disease states, such as infections and intoxications. The count may decrease in response to certain types of infections or drugs or in association with certain conditions, such as chronic anemia, malnutrition, or anaphylaxis.

Although white cells are found in the circulation, most occur outside the circulation, within tissues, where they fight infections; the few in the bloodstream are in transit from one site to another. As living cells, their survival depends on their continuous production of energy. The chemical pathways utilized are more complex than those of red blood cells and are similar to those of other tissue cells. White cells, containing a nucleus and able to produce ribonucleic acid ( RNA), can synthesize protein. White cells are highly differentiated for their specialized functions, and they do not undergo cell division ( mitosis) in the bloodstream; however, some retain the capability of mitosis. On the basis of their appearance under a light microscope, white cells are grouped into three major classes- lymphocytes, granulocytes, and monocytes-each of which carries out somewhat different functions.

Lymphocytes, which are further divided into B cells and T cells, are responsible for the specific recognition of foreign agents and their subsequent removal from the host. B lymphocytes secrete antibodies, which are proteins that bind to foreign microorganisms in body tissues and mediate their destruction. Typically, T cells recognize virally infected or cancerous cells and destroy them, or they serve as helper cells to assist the production of antibody by B cells. Also included in this group are natural killer (NK) cells, so named for their inherent ability to kill a variety of target cells. In a healthy person, about 25 to 33 percent of white blood cells are lymphocytes.

Granulocytes, the most numerous of the white cells, rid the body of large pathogenic organisms such as protozoans or helminths and are also key mediators of allergy and other forms of inflammation. These cells contain many cytoplasmic granules, or secretory vesicles, that harbour potent chemicals important in immune responses. They also have multilobed nuclei, and because of this they are often called polymorphonuclear cells. On the basis of how their granules take up dye in the laboratory, granulocytes are subdivided into three categories: neutrophils, eosinophils, and basophils. The most numerous of the granulocytes-making up 50 to 80 percent of all white cells-are neutrophils. They are often one of the first cell types to arrive at a site of infection, where they engulf and destroy the infectious microorganisms through a process called phagocytosis. Eosinophils and basophils, as well as the tissue cells called mast cells, typically arrive later. The granules of basophils and of the closely related mast cells contain a number of chemicals, including histamine and leukotrienes, that are important in inducing allergic inflammatory responses. Eosinophils destroy parasites and also help to modulate inflammatory responses.

MRSA and neutrophil National Institute of Allergy and Infectious Diseases/Centers for Disease Control and Prevention (CDC)

Monocytes, which constitute between 4 and 8 percent of the total number of white blood cells in the blood, move from the blood to sites of infection, where they differentiate further into macrophages. These cells are scavengers that phagocytose whole or killed microorganisms and are therefore effective at direct destruction of pathogens and cleanup of cellular debris from sites of infection. Neutrophils and macrophages are the main phagocytic cells of the body, but macrophages are much larger and longer-lived than neutrophils. Some macrophages are important as antigen-presenting cells, cells that phagocytose and degrade microbes and present portions of these organisms to T lymphocytes, thereby activating the specific acquired immune response.

Specific types of cells are associated with different illnesses and reflect the special function of that cell type in body defense. In general, newborns have a high white blood cell count that gradually falls to the adult level during childhood. An exception is the lymphocyte count, which is low at birth, reaches its highest levels in the first four years of life, and thereafter falls gradually to a stable adult level. See also blood cell formation.

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white blood cell | Definition & Function

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White blood cell, cellular component of blood that helps defend the body against infection. White blood cells defend against infection and disease by ingesting foreign materials and cellular debris, by destroying infectious agents and cancer cells, or by producing antibodies.

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The job of white blood cells (also called leukocytes) is to fight infections and cancer. They also remove poison, waste and damaged cells from the body.

The number of white blood cells increases when a person is fighting infection or disease and decrease when a person is healthy.

Types of white blood cells

Lymphocytes

Lymphocytes are round white blood cells a bit bigger than a red blood cell. Their center is round and they have little cytoplasm. Part of the lymphatic system, these target specific germs or poisons using their antibodies. There are three known types of lymphocytes, called T-cells, B-cells, and natural killer cells (NK cells).

B-cells make antibodies, which are little molecules that attach to viruses or bad cells. These tell other cells to destroy the viruses or bad cells, like a flag.

T-cells can either help make more B-cells, or kill cells with antibodies.

Natural killer cells kill cells in the body that have been infected by a virus or that are part of a tumor. They are part of the innate immune system.

Monocytes are reserve cells which turn into macrophages and dendritic cells, which work together in tissues to fight disease. Monocytes have a kidney bean shaped center and lots of cytoplasm. They may appear as macrophages in a non-round shape when they pass through tissue to eat germs, "junk" cells, and dead cells.

Granulocytes

The next three types of white blood cells are referred to as granulocytes since they all contain rough, grain-like particles that assist in attacking viruses and bacteria. Granulocytes are also called polymorphonuclear leukocytes because of the shape of the nucleus, which has three segments.

Neutrophils

Neutrophils are the most abundant type of white blood cells in mammals, 70% of leukocytes. They are an essential part of the immune system. They get to the site of an injury within minutes, and make up much of the content of pus. They have a short life-span of a couple of days.

The nucleus, which looks like a string of beads, does not take up stain strongly. Like phagocytes, they actually eat the bacteria and dead cells. They also release a bunch of proteins which work to damage the bacteria.

Basophils, or basophil granulocytes, are rare granulocytes. If you collected 1000 white blood cells, only 1-3 of them would be basophils. Their nucleus is hidden by granules which turn dark blue in color when stained. Basophils carry histamine and heparin. They appear at the sites of ecto parasite infection, or allergies. We don't know exactly how they work.

Eosinophils

Eosinophils, or acidophils, are leukocytes. They are one of the immune system components which combat parasites and certain infections. As with mast cells and basophils, they part causes of allergy and asthma. Eosinophils are round cells with a lobed nucleus and granules which turn red when stained. These granules are packed with proteins that can be poured out to help destroy invaders.

Cell testing

A test called a differential count shows how many white blood cells there are in a person's blood, and how many of each type are there.

Images for kids

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The job of white blood cells (also called leukocytes) is to fight infections and cancer. They also remove poison, waste and damaged cells from the body. The number of white blood cells increases when a person is fighting infection or disease and decrease when a person is healthy.

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Smooth Muscle Innervation Stock Vector (Royalty Free) 97190060

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Find Smooth Muscle Innervation stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. Thousands of new, high-quality pictures added every day.

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This article contains some information about muscle cells

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Muscles is a tissue in animal bodies. Muscles help us to move our body parts. Many muscles pull on bones to make arms and legs move.

Types of muscles

There are three kinds of muscles:

1. Skeletal muscles

2. Smooth muscles

3. Cardiac muscle

Muscle action can be classified as being either voluntary or involuntary.

The skeletal muscles move the limbs (arms and legs). They move the jaw up and down so that food can be chewed. Skeletal muscles are the only voluntary muscles. This means they are the only muscle that you can choose to move.

The cardiac muscle is the muscle in the heart. When this muscle contracts (makes itself smaller) it pushes blood through the circulatory system. The cardiac muscle is not voluntary. Animals do not choose for their heart to contract.

The smooth muscles are the other muscles in the body that are involuntary. Smooth muscles are in many places. They are in:

Muscle structure

Muscles are made of many muscle cells. The cells contract together to make the muscle get shorter. The muscle cells know to do this together because many of them get information sent to them by nerves. Then cells that get the message from nerves tell other cells that are near them. They tell the other cells by sending an electrical current.

Muscle cells are filled with proteins called actin and myosin. These are the proteins that make the muscle contract (get shorter.)

Muscle contraction

When a nerve tells a muscle to contract, the muscle opens holes in its cell membrane. These holes are proteins that are called calcium channels. Then calcium rushes into the cell. Calcium also comes out of a special place in the cell called the sarcoplasmic reticulum. This calcium sticks to the specialized proteins actin and myosin. This triggers these proteins to contract the muscle.

Contraction also needs ATP. This is the energy that your cells use. It is made from using glucose in the cell. It takes a lot of energy to release contracted muscles. They use most of the energy for building muscles.

Exercise makes muscles get bigger (see hypertrophy). Exercise also makes muscles stronger. If a person does not exercise, their muscles atrophy. This means their muscles get smaller and weaker.

Diseases of muscles

There are many different kinds of muscle diseases. There are three big groups of diseases:

1. Neuromuscular diseases - these are problems with how the nerves tell the muscles to move. Strokes, cerebral palsy, and Parkinson's disease are neuromuscular diseases.

2. Motor endplate diseases - these are problems with the place where the nerve tells the muscle to move. Tetanus and myasthenia gravis are motor endplate diseases.

3. Myopathies - these are problems with the structure of the muscle. Muscular dystrophy, cancers like Ewing's sarcoma, and cardiomyopathy are myopathies.

Related pages

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Muscles is a tissue in animal bodies. Muscles help us to move our body parts. Many muscles pull on bones to make arms and legs move. There are three kinds of muscles: Skeletal muscles Smooth muscles Cardiac muscle Muscle action can be classified as being either voluntary or involuntary.

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Here is an introduction to nerve cells.

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A neuron (or neurone) is a nerve cell that carries electrical impulses. Neurons are the basic units of our nervous system.

Neurons have a cell body ( soma or cyton), dendrites and an axon. Dendrites and axons are nerve fibers. There are about 86 billion neurons in the human brain, which is about 10% of all brain cells. The human brain has about 16 billion neurons in the cerebral cortex. The neurons are supported by glial cells and astrocytes.

Neurons are connected to one another, but they do not actually touch each other. Instead they have tiny gaps called synapses. These gaps are chemical synapses or electrical synapses which pass the signal from one neuron to the next.

Types of neurons

By connection

There are three classes of neurons: motor neurons, sensory neurons and interneurons.

By function

Sensory neurons carry signals from sense organs to the spinal cord and brain.

Relay neurons carry messages between sensory or motor neurons and the central nervous system

Motor neurons carry signals from the CNS to muscles, motor neurons are connected to the relay neurons. The signal passes between the neurons via synapses. Synapses are microscopic voids between cells where chemicals are released from the axon terminal of one cell to specialized chemical receptors on the dendrite of the receiving cell.

Cell division

Mature neurons never divide: that is the general rule. They do not undergo cell division. In most cases, neurons are generated by special types of stem cells. A type of glial cell, called astrocytes, have also been seen to turn into neurons. In humans, neurogenesis (the origin of new nerve cells) largely ceases during adulthood - but in two brain areas, the hippocampus and the olfactory bulb, there is strong evidence for substantial numbers of new neurons.

The largest part of the human brain by far is the neocortex. It has at least~10 ¹⁰ neurons which stay with us for life.

Images for kids

In Spanish: Neurona para niños

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Here is some information about nerve cells.

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Types of Neurons (Nerve Cells)

The human body is made up of trillions of cells. Cells of the nervous system, called nerve cells or neurons, are specialized to carry "messages" through an electrochemical process. The human brain has approximately 86 billion neurons. To learn how neurons carry messages, read about the action potential.

Neurons come in many different shapes and sizes. Some of the smallest neurons have cell bodies that are only 4 microns wide. Some of the biggest neurons have cell bodies that are 100 microns wide. (Remember that 1 micron is equal to one thousandth of a millimeter!).

Neurons are similar to other cells in the body because:

1. Neurons are surrounded by a cell membrane.

2. Neurons have a nucleus that contains genes.

3. Neurons contain cytoplasm, mitochondria and other organelles.

4. Neurons carry out basic cellular processes such as protein synthesis and energy production.

However, neurons differ from other cells in the body because:

1. Neurons have specialize cell parts called dendrites andaxons. Dendrites bring electrical signals to the cell body and axons take information away from the cell body.

2. Neurons communicate with each other through an electrochemical process.

3. Neurons contain some specialized structures (for example, synapses) and chemicals (for example, neurotransmitters).

The Neuron

One way to classify neurons is by the number of extensions that extend from the neuron's cell body (soma).

Bipolar neurons have two processes extending from the cell body (examples: retinal cells, olfactory epithelium cells).

Pseudounipolar cells (example: dorsal root ganglion cells). Actually, these cells have 2 axons rather than an axon and dendrite. One axon extends centrally toward the spinal cord, the other axon extends toward the skin or muscle.

Multipolar neurons have many processes that extend from the cell body. However, each neuron has only one axon (examples: spinal motor neurons, pyramidal neurons, Purkinje cells).

Neurons can also be classified by the direction that they send information.

Sensory (or afferent) neurons: send information from sensory receptors (e.g., in skin, eyes, nose, tongue, ears)TOWARD the central nervous system.

Motor (or efferent) neurons: send informationAWAY from the central nervous system to muscles or glands.

Interneurons: send information between sensory neurons and motor neurons. Most interneurons are located in the central nervous system.

Check out the Gallery of Neurons to see some pictures of real neurons or"Sidewalk Cells" to see photographs of neurons on the street.

There are several differences between axons and dendrites:

Take information away from the cell body

Smooth Surface

Generally only 1 axon per cell

No ribosomes

Can have myelin

Branch further from the cell body

Bring information to the cell body

Rough Surface (dendritic spines)

Usually many dendrites per cell

Have ribosomes

No myelin insulation

Branch near the cell body

What is inside of a neuron? A neuron has many of the same organelles such as mitochondria, cytoplasm and a nucleus, as other cells in the body.

Nucleus - contains genetic material (chromosomes) including information for cell development and synthesis of proteins necessary for cell maintenance and survival. Covered by a membrane.

Nucleolus - produces ribosomes necessary for translation of genetic information into proteins

Nissl Bodies - groups of ribosomes used for protein synthesis.

Endoplasmic reticulum (ER) - system of tubes for transport of materials within cytoplasm. Can have ribosomes (rough ER) or no ribosomes (smooth ER). With ribosomes, the ER is important for protein synthesis.

Golgi Apparatus - membrane-bound structure important in packaging peptides and proteins (including neurotransmitters) into vesicles.

Microfilaments/Neurotubules - system of transport for materials within a neuron and may be used for structural support.

Mitochondria - produce energy to fuel cellular activities.

Did you know?

Happy 121 st Birthday to the Golgi apparatus! In 1898, the famous neuroanatomist Camillo Golgi reported his discovery of a ribbon-like apparatus inside neurons of the cerebellum. This structure now bears his name as the "Golgi apparatus."

Copyright © 1996-2019, Eric H. Chudler All Rights Reserved.

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Intended for elementary and secondary school students and teachers who are interested in learning about the nervous system and brain with hands on activities, experiments and information.

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Question: Do red blood cells have a nucleus?

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Red blood cells (also known as RBCs, red blood corpuscles or erythrocytes) are cells in the blood which transport oxygen. In women, there are about 4.8 million red blood cells per microliter of blood. In men, there are 5.4 million red blood cells per microliter of blood. Red blood cells are red because they have hemoglobin in them.

The most important function of red blood cells is the transport of oxygen (O ₂) to the tissues. The hemoglobin absorbs oxygen in the lungs. Then it travels through blood vessels and brings oxygen to all other cells via the heart. The blood cells go through the lungs (to collect oxygen), through the heart (to give all cells oxygen). They go back to the heart to be re-pumped to the lungs (to again collect oxygen), so the blood in your body travels in a double circuit, going through your heart twice before it completes one full circulation of the body.

A fact which makes mammalian red blood cells different to all other cells is that, when they are mature, red blood cells do not have a nucleus. All other vertebrates have red cells with nuclei.

Red blood cells are doughnut-shaped, but without the hole. This shape is called a bi-concave disc. However, hereditary diseases such as sickle-cell disease can cause them to change shapes and stop blood flow in capillaries and veins. Plasma is got from whole blood. To prevent clotting, an anticoagulant (such as citrate) is added to the blood immediately after it is taken.

Transport of CO2 in the blood

Carbon dioxide (CO ₂) is carried in blood in three different ways. The exact percentages vary depending whether it is arterial or venous blood.

Most of it (about 68% to 83%) is converted to bicarbonate ions by the enzyme carbonic anhydrase in the red blood cells. by the reaction CO₂ + H₂O → H₂CO₃ → H⁺ + .

5% - 10% is dissolved in the blood plasma.

5% - 10% is bound to haemoglobin as carbamino compounds.

Images for kids

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Red blood cells (also known as RBCs, red blood corpuscles or erythrocytes) are cells in the blood which transport oxygen. In women, there are about 4.8 million red blood cells per microliter of blood. In men, there are 5.4 million red blood cells per microliter of blood.

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Here is some information about blood cells

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You know what blood is - it's that red stuff that oozes out if you get a paper cut. But what is blood, really, and what does it do?

What Is Blood and What Does It Do?

Blood is needed to keep us alive. It brings oxygen and nutrients to all the parts of the body so they can keep working. Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body. Blood also fights infections, and carries hormones around the body.

Blood is made up of blood cells and plasma. Plasma (say: PLAZ-muh) is a yellowish fluid that has nutrients, proteins, hormones, and waste products. The different types of blood cells have different jobs.

How Blood Works

Blood helps the parts of our body work as they should. In this video, learn how blood brings oxygen and nutrients around the body and helps fight off infections.

What Are the Types of Blood Cells?

Red blood cells: Red blood cells (RBCs, also called erythrocytes; say: ih-RITH-ruh-sytes) are shaped like slightly indented, flattened disks. RBCs contain hemoglobin (say: HEE-muh-glow-bin), a protein that carries oxygen. Blood gets its bright red color when hemoglobin picks up oxygen in the lungs. As the blood travels through the body, the hemoglobin releases oxygen to the different body parts.

Each RBC lives for about 4 months. Each day, the body makes new RBCs to replace those that die or are lost from the body. RBCs are made in the inside part of bones called the bone marrow.

White blood cells: White blood cells (WBCs, also called leukocytes, say: LOO-kuh-sytes) are a key part of the immune system. The immune system helps the body defend itself against infection. Different types of WBCs fight germs, such as bacteria and viruses. Some types of WBCs make antibodies, which are special proteins that recognize foreign materials and help the body get rid of them.

There are several types of WBCs, and their life spans vary from hours to years. New cells are constantly being formed - some in the bone marrow and some in other parts of the body such as the spleen, thymus, and lymph nodes.

Blood contains far fewer WBCs than red blood cells, although the body can increase WBC production to fight infection. The white blood cell count (the number of cells in a given amount of blood) in someone with an infection often is higher than usual because more WBCs are being made or are entering the bloodstream to battle the infection.

Platelets: Platelets (also called thrombocytes, say: THROM-buh-sytes) are tiny oval-shaped cells that help in the clotting process. When a blood vessel breaks, platelets gather in the area and help seal off the leak. Platelets work with proteins called clotting factors to control bleeding inside our bodies and on our skin.

Platelets survive only about 9 days in the bloodstream and are constantly being replaced by new platelets made by the bone marrow.

How Does Blood Travel in the Body?

With each heartbeat, the heart pumps blood throughout our bodies, carrying oxygen to every cell. After delivering the oxygen, the blood returns to the heart. The heart then sends the blood to the lungs to pick up more oxygen. This cycle repeats over and over again.

The circulatory system is made up of blood vessels that carry blood away from and toward the heart.

Two types of blood vessels carry blood throughout our bodies:

1. Arteries carry oxygenated blood (blood that has gotten oxygen from the lungs) from the heart to the rest of the body.

2. Blood then travels through veins back to the heart and lungs, so it can get more oxygen to send back to the body via the arteries.

As the heart beats, you can feel blood traveling through the body at pulse points - like the neck and the wrist - where large, blood-filled arteries run close to the surface of the skin.

What if Someone Has Low Numbers of Blood Cells?

Sometimes medicine can be given to help a person make more blood cells. And sometimes blood cells and some of the special proteins blood contains can be replaced by giving a person blood from someone else. This is called a transfusion (say: trans-FEW-zyun).

People can get transfusions the part of blood they need, such as platelets, RBCs, or a clotting factor. When someone donates blood, the whole blood can be separated into its different parts to be used in these ways.

Hey, What's Your Type?

Everybody's blood is red, but it's not all the same. There are eight blood types, described using the letters A, B, and O. Those letters stand for certain proteins found on the red blood cells. Not everyone has the same proteins.

Besides getting a letter or two, a person's blood is either "positive" or "negative." This is a way of keeping track of whether someone's blood has a protein called Rh protein. If your blood is positive, you have this protein. If it's negative, you don't. Either way is totally fine.

People have one of these eight different blood types:

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It swirls through your veins and arteries, but what is it really? Find out about blood in this article for kids.

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This site has information about different types of cells. Look at the bottom of the site for links to additional topics.

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Kids learn more about the science of the cell. Smallest biological form of life.

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This chapter explains the different types of cells in the human body.

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Here is a basic introduction to cells

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Every organism, or living thing, is made up of structures called cells. The cell is the smallest unit with the basic properties of life. Some tiny organisms, such as bacteria...

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This site gives an introduction to cells with links to information on many topics related to cells.

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All living organisms on Earth are divided into cells. The main concept of cell theory is that cells are the basic structural unit for all organisms. Cells are small compartments that hold the biological equipment necessary to keep an organism alive and successful. Living things may be single-celled or they may be very complex such as a human being.

There are smaller pieces that make up cells such as macromolecules and organelles. A protein is an example of a macromolecule while a mitochondrion is an example of an organelle. Cells can also connect to form larger structures. They might group together to form the tissues of the stomach and eventually the entire digestive system. However, in the same way that atoms are the basic unit when you study matter, cells are the basic unit for biology and organisms.

In larger organisms, the main purpose of a cell is to organize. Cells hold a variety of pieces and each cell type has a different purpose. By dividing responsibilities among different groups of cells, it is easier for an organism to survive and grow.

If you were only made of one cell, you would be very limited. You don't find single cells that are as large as a cow. Cells have problems functioning when they get too big. Also, if you were only one cell you couldn't have a nervous system, no muscles for movement, and using the internet would be out of the question. The trillions of cells in your body make your way of life possible.

There are many types of cells. In biology class, you will usually work with plant-like cells and animal-like cells. We say "animal-like" because an animal type of cell could be anything from a tiny microorganism to a nerve cell in your brain. Biology classes often take out a microscope and look at single-celled microbes from pond water. You might see hydra, amoebas, or euglena.

Plant cells are easier to identify because they have a protective structure called a cell wall made of cellulose. Plants have the wall; animals do not. Plants also have organelles such as the green chloroplast or large, water-filled vacuoles. Chloroplasts are the key structure in the process of photosynthesis.

Cells are unique to each type of organism. If you look at very simple organisms, you will discover cells that have no defined nucleus ( prokaryotes) and other cells that have hundreds of nuclei ( multinucleated).

Humans have hundreds of different cell types. You have red blood cells that are used to carry oxygen (O ₂) through the body and other cells specific to your heart muscle. Even though cells can be very different, they are basically compartments surrounded by some type of membrane.

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Biology4Kids.com! This tutorial introduces cell structure. Other sections include plants, animal systems, invertebrates, vertebrates, and microorganisms.

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Please click here if you are not redirected within a few seconds.

Don't Miss a Detail With Leica's Full Suite of Compound Microscopes. Our Instruments Meet the Highest Demands in Any Application - Life Science to Industrial. Ergonomic. Fast, Easy, User-Friendly. Superior Quality. Live Cell Imaging.

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video how to use a compound microscope - Google Search

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Please click here if you are not redirected within a few seconds. Don't Miss a Detail With Leica's Full Suite of Compound Microscopes. Our Instruments Meet the Highest Demands in Any Application - Life Science to Industrial. Ergonomic. Fast, Easy, User-Friendly. Superior Quality. Live Cell Imaging.