-
William Harvey
He explained the ways of the circulatory system and how the blood flows through your body. -
Anton van Leeuwenhoek
He was the first to observe living bacteria. -
Edward Jenner
Came up with a smallpox vaccine. -
Thomas Malthus
He published “An Essay of Population” which explained that someday the population would exceed the resources. -
Charles Darwin
He published On the Origin of Species that showed species of life have descended over time. -
Florence Nightingale
Her nursing theory was published. -
Louis Pasteur
He came up with a process known as pasteurization. -
Gregor Mendel
He did an experiment on plant hybridization and came up with Laws of Inheritance. -
Joseph Lister
He used carbolic acid to wash his hands and sprayed it in the air to kill airborne germs. -
Robert Koch
Proves Bacillus anthracis causes anthrax. -
Paul Ehrlich
Studied red blood cells and discovered the precursors of erythrocytes. -
Clara Barton
She founded the American Red Cross -
Sir Alexander Fleming
Found that a mould culture prevented growth of staphylococci and named the substance penicillin. -
Howard Florey
He created the first antibiotic drug. -
Dr. Charles Drew
He became director of the first American Red Cross Blood Bank. -
Erwin Chargaff
He observed that adenine equals thymine and cytosine equals guanine. -
Alfred Hershey
He concluded that DNA is the heredity molecule in viruses. -
James Watson
He put together a model for the structure of DNA. -
Albert Sabin
Developed an oral vaccine for polio. -
Jonas Salk
Came up with a vaccine for polio.
