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The twentieth event is when a human embryo was cloned. This is iportant because the has no advanced and is now able to survive and turn into a fetus

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The nineteenth event is the use of adult stem cells to treat diseases. This is important because with advanments in technology, more parts of the human body could possibly treat other diseases.

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The eighteenth event is the first robotic surgical system. This is important because is makes the patients have less pain and faster recovery.

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The seventeenth even is when Dr. Elie Metchnikoff identified the function of white blood cells. This is important becuase it could help figure out certain types of disease where peoples white blood cells aren't working correctly.

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The sixteenth event is when Francis Crick and James Watson described the structure of DNA and how it carries genetic information. This is important because it aids in finding a way to cure inherited diseases

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The fifteenth event is whenn Dr. Harry Plotz deeloped a vacine against typhoid. This is important because it could help make ideas on how to treat other similar diseases.

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The fourteenth event is when Miller Reese patented the battery-driven hearing aid. This is important because it made it possible for hearing aids to be better and last longer.

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The thirteenth event is when Carl Landsteiner cassified the ABO blood groups. This is important because this made it possible for more people to be able to donate blood that was useful to others.

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The twelfth event is Elizabeth Blackwell becoming the first female physician in the United States. This is important because it has empowered more women to become physicians. This has lead to there being a larger number of people in the medical field.

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The eleventh event is Louis Pasteur developing the germ theory. This is important because during the process, he discovered pasterurization, vaccination, and fermentation. It also provided ideas on how to prevent disease.

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The tenth event is when Dr. Philippe Pinel began humane treatment for mental illness. This is important because it started the development of treating mental patients with different disorders.

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The ninth event is the invention of the stethoscope. This is important because doctors were now able the hear interal body sounds which furthered our knowledge in human anatomy.

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The eighth event is the first federal vaccination legislation. This is important because it made everyone get vaccines for potentially harmful diseases.

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The seventh event is the invention of the mircoscope. This is important because it alloed physicians to be able to see organisms that the human eye couldn't see.

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The sixth event is the establishment of the use of ligatures. These were use to bind arteries and stop bleeding. This is important because it was a new, cleaner, and safer way to stop a ound from bleeding. It aso helped in keeping the wound from getting infected.

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The fifth event is when dissection of the human body was allowed. This is important because it allowed a more accurate view of human anatomy.

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The fourth event is the Arabs requiring physicians to pass examinations and obtain licenses to do their pratices. This is important because this idea began to spread from just the Arabs. This made praticing more safe, accurate, and helpful to the patient.

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The third event is the Romans developing sanitary systes. This is important because this has dracmatically reduced us from obtaining diseases that are connected to flith.

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The second event is Hippocrates discovering and accurately describing the symptoms of pneumonia and epileps in children. This is important because there is already a record of the symptoms, so when a child has the symptoms of it, the disease can easily be identified.

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This first event is when Hippocrates authorized the "Hippocratic Oath". This is imprortant because it led to the belief that illness and disease had rational and physical explanations.