In what year did the founder of the Salk Institute for Biological Studies die?
Jonas Salk Jonas Edward Salk ( ; October 28, 1914June 23, 1995) was an American medical researcher and virologist. He discovered and developed one of the first successful polio vaccines. Born in New York City, he attended New York University School of Medicine, 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..
Joseph Schlessinger Joseph Schlessinger (born Josip Schlessinger; 26 March 1945) is a Yugoslav-born Israeli-American biochemist and biophysician. He is chair of the Pharmacology Department at Yale University School of Medicine in New Haven, Connecticut, as well as the founding director of the school's new Cancer Biology Institute. His area of research is signaling through tyrosine phosphorylation, which is important in many areas of cellular regulation, especially growth control and cancer. Schlessinger's work has led to an understanding of the mechanism of transmembrane signaling by receptor tyrosine kinases and how the resulting signals control cell growth and differentiation.