Karl Landsteiner blood group A nor of blood group B. Therefore, the immune systems of persons with blood group A, B or AB do not refuse the donation. Further, because persons with blood group AB do not form antibodies against either the antigens of blood group A or B, they can accept blood from persons with these blood groups, besides from persons with blood group O-negative. In today's blood transfusions only concentrates of red blood cells without serum are transmitted, which is of great importance in surgical practice. In 1930 Landsteiner was awarded the Nobel Prize in Physiology or Medicine in recognition
Karl Landsteiner of these achievements. For his pioneering work, he is recognized as the father of transfusion medicine. After World War I, Vienna and the new republic of Austria as a whole was in a desolate economic state, a situation in which Landsteiner did not see any possibilities to carry on with his research work. He decided to move to The Netherlands and accepted a post as prosector in the small Catholic "St. Joannes de Deo" hospital (now MCH Westeinde) in The Hague and, in order to improve his financial situation also took a job in a small factory, producing old tuberculin