Karl Landsteiner Who in American Jewry", stating that "it will be detrimental to me to emphasize publicly the religion of my ancestors." Karl Landsteiner Karl Landsteiner, , (14 June 1868 – 26 June 1943) was an Austrian biologist, physician, and immunologist. He distinguished the main blood groups in 1900, having developed the modern system of classification of blood groups from his identification of the presence of agglutinins in the blood, and identified, with Alexander S. Wiener, the Rhesus factor, in 1937, thus enabling physicians to transfuse blood without endangering the patient's life. With Constantin Levaditi and Erwin Popper, he discovered the polio
John Landsteiner is married. John Landsteiner John Landsteiner (born May 19, 1990) is an American curler. He competed in the 2014 Winter Olympics and won gold as part of John Shuster's rink in the 2018 Winter Olympics. His hometown is Mapleton, Minnesota and he currently resides in Duluth, Minnesota. At the 2013 United States Olympic Curling Trials, Landsteiner was part of the first-placed team. At the qualification event for the 2014 Winter Olympics Landsteiner's team won the second qualifier 8–5 over the Czech Republic to take the final 2014 Olympic qualification spot. Landsteiner currently works as a corrosion engineer for Lake Superior