Louis Pasteur

French biologist, microbiologist, & chemist, born in 1822, & known for discovering the principles of vaccination.
Dian Fossey

American primatologist known for extensive study of mountain gorillas from 1966 until her 1985 murder.
Antoine van Leeuwenhoek

Dutch microscopist born in 1632. He was the first to observe bacteria and protozoa.
René Dubos
French-American microbiologist, experimental pathologist, humanist, environmentalist, & author born in 1901.
Robert Hooke

English polymath, scientist, & architect born in 1635. First to visualize a micro-organism.
Alexander Fleming

Scottish biologist, physician, microbiologist, & pharmacologist best known for discovering penicillin.
André Hubert Dumont
Belgian biologist & professor of minerology & geology born in 1809.
Thomas Huxley

English biologist and anthropologist specializing in comparative anatomy born in 1825.