Alfred G. Gilman, M.D., Ph.D. was Regental Professor Emeritus of Pharmacology at UT Southwestern. He won the 1994 Nobel Prize in Physiology or Medicine for his discovery of "G proteins," which has led to a more complete understanding of how cells receive signals and respond to external stimuli. This photo was used on the cover of the 1994 issue "Southwestern Medicine," UT Southwestern's annual publication. Inside is an article describing Dr. Gilman's career and his research on G Proteins. Dr. Gilman served as dean of Southwestern Medical School from 2005 to 2009. In addition to the Nobel Prize, other honors include election to the National Academy of Sciences in 1985 and to the Institute of Medicine in 1989. Also in 1989, he received the prestigious Lasker Award in Basic Medical Research. He was primary editor (in 1980, 1985 and 1990) of the best-selling pharmacology textbook "The Pharmacological Basis of Therapeutics," often called "Goodman and Gilman" after the names of its editors. (The first edition was written by Drs. Louis Goodman and Alfred Gilman, father of Alfred G. Gilman.) Dr. Alfred G. Gilman received his M.D. and Ph.D. degrees in Pharmacology from Case Western Reserve University in 1969. Dr. Gilman came to UT Southwestern in 1981 as Chair of the Pharmacology Department and served in that role for 24 years.