Jan. 09, 2021
Nearly 3,000 illustrations, including video clips of neurologic disorders.
Every article is reviewed by our esteemed Editorial Board for accuracy and currency.
Full spectrum of neurology in 1,200 comprehensive articles.
American virologist Jonas Salk (1914-1995) in 1988. Salk developed the first effective trivalent killed-virus poliovirus vaccine. (Contributed by Dr. Douglas Lanska. Courtesy of the U.S. Public Health Image Library.)