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 in Physiology or Medicine dinner, although it was originally six courses in 1901. Each Nobel Prize laureate may bring up to 16 guests. Sweden's royal family attends, and typically the Prime Minister and other members of the government attend as well as representatives of the Nobel family. The first Nobel Prize in Physiology or Medicine was awarded in 1901 to the German physiologist Emil Adolf von Behring. Behring's discovery of serum therapy in the development of the diphtheria and tetanus vaccines put "in the hands of the physician a victorious weapon against illness and deaths". In 1902, the award went to Ronald Ross for