Robert Gallo, M.D. (left) and Albert B. Sabin, M.D. (right). Sabin served as a full-time expert consultant for the National Cancer Institute in 1974. Gallo was a former Biomedical Researcher, National Institutes of Health. Robert Charles Gallo (born March 23, 1937) is an American biomedical researcher. He is best known for his role in the discovery of the Human Immunodeficiency Virus (HIV), the infectious agent responsible for the Acquired Immune Deficiency Syndrome (AIDS), and he has been a major contributor to subsequent HIV research. Assignment of responsibility for the discovery of HIV has been controversial. Gallo states that his choice of profession was influenced by the early death of his sister from leukemia, a disease to which he initially dedicated much of his research. Albert Bruce Sabin (August 26, 1906 - March 3, 1993) was an American medical researcher best known for having developed an oral polio vaccine. The Sabin vaccine consists of |