# data[].attributes.body
With the help of Hans Jansen, Zacharias Jansen developed the first compound microscope. After observing various things under the microscope Zacharias created cell theory, claiming that the cell was the basic unit of life for all plant matter.

Source: https://prezi.com/jyj_qhug27g7/hans-and-zacharias-janssen/

# data[].attributes.body
Anton van Leeuwenhoek was the first to discover bacteria and protozoa when looking under a microscope he was selling. He continued to look at such things, drawing the first accurate representation of red blood cells and bacteria. He also researched life histories of various animals, proving that they were not created via spontaneous generation.
Refuted doctrine of spontaneous generation

Source: https://www.britannica.com/biography/Antonie-van-Leeuwenhoek

# data[].attributes.body
Micrographia was published by Robert Hooke, a book filled with all kinds of drawings and descriptions of cells and other organisms observed under microscopes. He observed these cells when looking at a cork, and is credited as the first to discover and name the cell.

Source: httpd://www.nationalgeographic.org/encyclopedia/cell-theory/#:https://www.nationalgeographic.org/encyclopedia/cell-theory/#:~:text=occurs%20within%20cellshttps://www.nationalgeographic.org/encyclopedia/cell-theory/#:~:text=occurs%20within%20cells.-,English%20scientist%20Robert%20Hooke%20published%20Micrographia%20in%201665.,orghttps://www.nationalgeographic.org/encyclopedia/cell-theory/#:~:text=occurs%20within%20cells.-,English%20scientist%20Robert%20Hooke%20published%20Micrographia%20in%201665.,organism%2C%20which%20he%20called%20cells.&text=theory%20that%20all%20organisms%20are,basic%20structural%20units%20of%20life.https://www.nationalgeographic.org/encyclopedia/cell-theory/#:~:text=occurs%20within%20cells.-,English%20scientist%20Robert%20Hooke%20published%20Micrographia%20in%201665.,organism%2C%20which%20he%20called%20cells.&text=theory%20that%20all%20organisms%20are,basic%20structural%20units%20of%20life.https://www.nationalgeographic.org/encyclopedia/cell-theory/#:~:text=occurs%20within%20cells.-,English%20scientist%20Robert%20Hooke%20published%20Micrographia%20in%201665.,organism%2C%20which%20he%20called%20cells.&text=theory%20that%20all%20organisms%20are,basic%20structural%20units%20of%20life.https://www.nationalgeographic.org/encyclopedia/cell-theory/#:~:text=occurs%20within%20cells.-,English%20scientist%20Robert%20Hooke%20published%20Micrographia%20in%201665.,organism%2C%20which%20he%20called%20cells.&text=theory%20that%20all%20organisms%20are,basic%20structural%20units%20of%20life.https://www.nationalgeographic.org/encyclopedia/cell-theory/#:~:text=occurs%20within%20cells.-,English%20scientist%20Robert%20Hooke%20published%20Micrographia%20in%201665.,organism%2C%20which%20he%20called%20cells.&text=theory%20that%20all%20organisms%20are,basic%20structural%20units%20of%20life.

# data[].attributes.body
Matthias Schleiden was the first to create the actual unified concept of cell theory. He stated that different parts of plants were made out of cells, and recognized the importance of the nucleus in a cells structure.

Source: https://www.britannica.com/biography/Matthias-Jakob-Schleiden

# data[].attributes.body
Theodore Schwann found that the cell was also the basic unit of life for animals as well as plants. Schwann concluded that fermentation came from life processes and did much research on yeast and other such things.

Source: https://www.britannica.com/biography/Theodor-Schwann

# data[].attributes.body
Rudolf Carl Virchow discovered cell pathology. This means that he discovered the ways that diseases cause changes in cells, creating sickness. He also discovered in an experiment that cells make up ALL living things, including bacteria and that cells create themselves.

Source: https://embryo.asu.edu/pages/rudolf-carl-virchow-1821-1902

# data[].attributes.body
Louis Pasteur contributed to cell theory by disproving the idea of spontaneous generation. He did this by forming an experiment which he found that could only grow with air. This was the basis for something later coined "germ theory," explaining how bacteria and viruses travel.

Source: https://www.sidmartinbio.org/what-is-the-contribution-of-louis-pasteur-in-cell-theory/

# data[].attributes.body
1. Jansen, Hook, and Leowolf discovered the concept of the cell. This allowed scientists afterward to build upon the concept  of the cell, creating cell theory.
2. Our lives would be vastly different without the discovery of microorganisms. Without this we would never be able to have most of the medicine we have today, we would be unable to fight many diseases, and we wouldn't understand what happens when our body gets sick.
3. Spontaneous Generation is a concept developed to describe the appearances of things in certain places, suggesting that some things basically "summoned" or created organisms.
4. Cell Theory impacted later scientific discoveries by giving a basis for all life. This meant that life could be understood from the same building blocks, and more research could be done  into the microscopic world.
5. The rejection of spontaneous generation shows the nature of science to be malleable and subject to change. Nothing is fixed, and everything can be changed with the appropriate evidence to back it up. In the end, the truth is more important than what people believe or have believed.