Karl Landsteiner ("tuberculinum prestinum"). He also published a number of papers, five of them being published in Dutch by the Royal Academy of Sciences. Yet working conditions proved to be not much better than in post-war Vienna. So Landsteiner accepted the invitation that reached him from New York, initiated by Simon Flexner, who was familiar with Landsteiner's work, to work for the Rockefeller Institute. He arrived there with his family in the spring of 1923. Throughout the 1920s Landsteiner worked on the problems of immunity and allergy. In 1927 he discovered new blood groups: M, N and P, refining the work he
Nobel Prize in Physiology or Medicine age of 43. Ivan Pavlov, whose work Nobel admired and supported, received the prize in 1904 for his work on the physiology of digestion. Subsequently, those selecting the recipients have exercised wide latitude in determining what falls under the umbrella of Physiology or Medicine. The awarding of the prize in 1973 to Nikolaas Tinbergen, Konrad Lorenz, and Karl von Frisch for their observations of animal behavioral patterns could be considered a prize in the behavioral sciences rather than medicine or physiology. Tinbergen expressed surprise in his Nobel Prize acceptance speech at "the unconventional decision of the Nobel Foundation to award