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
2006 Nobel Peace Prize that Yunus was a poor choice for the award, stating: "...the Nobel committee could have made a braver, more difficult, choice by declaring that there would be no recipient at all." He is one of only seven persons to have won the Nobel Peace Prize, Presidential Medal of Freedom, and the Congressional Gold Medal. Other notable awards include the Ramon Magsaysay Award in 1984, the World Food Prize, the International Simon Bolivar Prize (1996), the Prince of Asturias Award for Concord and the Sydney Peace Prize in 1998, and the Seoul Peace Prize in 2006. Additionally, Yunus has been awarded