HAYFLICK, Leonard. American, b. 1928. Genres: Biology, Medicine/Health. Career: University of Texas Medical Branch, Galveston, Dept of Microbiology, McLaughlin research fellow in infection and immunity, 1956-58; Wistar Institute of Anatomy and Biology, Philadelphia, PA, associate member, 1958-68; University of Pennsylvania, Philadelphia, assistant professor of research medicine, 1966-68; Stanford University, Stanford, CA, School of Medicine, professor of medical microbiology, 1968-76, senator-at-large for basic medical sciences, 1970-73, chair of general research support grant committee, 1972-74; Children's Hospital, Oakland, CA, senior research cell biologist, 1976-81; University of Florida, Gainesville, professor of zoology and professor of microbiology and immunology, 1981-87, director of the Center for Gerontology Studies of the College of Liberal Arts and Sciences, 1981-87; University of California, San Francisco, School of Medicine, professor of anatomy, cell biology, and aging, 1988-. Visiting professor/scientist to institutions worldwide; consultant to committees of the US Congress. Publications: How and Why We Age, 1994. EDITOR: (with others) Biology of the Mycoplasma, 1967; The Mycoplasmatales and the L-Phase of Bacteria, 1969; (with others) Handbook of the Biology of Aging, 1977. Contributor to professional journals. Address: University of California-San Francisco, PO Box 89, The Sea Ranch, CA 95497, U.S.A.