Who is the man in the picture?

Jonas Salk was one of the United States's best-known microbiologists, chiefly celebrated for his discovery of his polio vaccine. Salk's greatest contribution to immunology was the insight that a "killed virus" is capable of serving as an antigen, prompting the body's immune system to produce antibodies that will attack invading organisms. This realization enabled Salk to develop a polio vaccine composed of killed polio viruses. Producing the necessary antibodies to help the body to ward off the disease without itself inducing polio.

Jonas Edward Salk born October 28, 1914 died June 23, 1995. He discovered and developed one of the first successful polio vaccines. Born in New York City, he attended New York University School of Medicinr, Later choosing to do medical research instead of becoming a practicing physician. In 1939, after earning his medical degree, Salk began an internship as a scientist physician at Mount Sinai Hospital. Two years later he was granted a fellowship at the University of Michigan, where he would study flu viruses with his mentor Thomas Francis, Jr.