Karl Landsteiner 1868 - 1943

Austrian; American
born in:
Vienna, Wien, Austria

1902 - announced discovery of the A B O (first) blood group system. 1908 - discovered one of earliest breakthroughs in the conquest of polio. 1927 - discovered the second and third blood group systems. 1930 - awarded Nobel Prize for physiology or medicine for blood group research and results. 1940 - announced discovery of the rhesus (Rh) factor.