Alter, M.D., is an NIH physician-scientist and virologist best known for his work that led to the discovery of Hepatitis B and C. He dedicated his career to making blood transfusions safer. 1969 - Present | Clinical Center | Nobel Prize for Medicine 2020 | Hepatitis B and C, Blood Transfusion

Anfinsen, M.D., began as a biochemist at the National Heart Institute and was soon appointed the Chief of the Laboratory of Chemical Biology at what is now NIDDK. In 1972, he won the Nobel Prize in Chemistry for his work on protein folding1950-1981 | NHLBI, NIDDK | Nobel Prize for Chemistry 1972 | Protein Structure, Protein Folding

One of the first scientists assigned to the National Institute of Health in 1930, Armstrong is known for his work on polio and other infectious diseases like botulism, influenza, syphilis, tetanus, milk-borne epidemics, dengue, and encephalitis.1921-1963 | Hygenic Laboratory | Virology, Polio