Karl (karl). 1868–1943, Austrian immunologist, who discovered (1900) human blood groups and introduced the ABO classification system. He also discovered (1940) the Rhesus (Rh) factor in blood and researched into poliomyelitis. Nobel prize for physiology or medicine (1930)
Landsteiner in American English
(ˈlændˌstaɪnər; German ˈlɑntˌʃtaɪnəʀ)
Karl1868-1943; U.S. pathologist & immunologist, born in Austria