Karl Landsteiner 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 virus in 1909. He received the Aronson Prize in 1926. In 1930, he received the Nobel Prize in Physiology or
Nobel Prize controversies many publications before a 15 November Reuters story from Stockholm with the announcement that the prize that year was being awarded to William Henry Bragg and William Lawrence Bragg "for their services in the analysis of crystal structure by means of X-rays". There were unsubstantiated rumors at the time that Tesla and Edison had won the prize and that the Nobel committee had changed recipients when Tesla and/or Edison refused the award (a claim also made many years later attributed Tesla). The Nobel Foundation declined to comment on the rumors other than saying, "Any rumor that a person has not