Portal:Austria/Selected biography/17

Karl Landsteiner (June 14, 1868 – June 26, 1943), was a biologist and physician. He is noted for his development in 1901 of the modern system of classification of blood groups from his identification of the presence of agglutinins in the blood, and in 1930 he received the Nobel Prize in Physiology or Medicine. With Alexander S. Wiener, he identified the Rh factor in 1937. Landsteiner and Erwin Popper discovered the polio virus in 1909. He was awarded a Lasker Award in 1946 posthumously.