Word: agglutinogens
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Dates: during 1930-1939
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...Karl Landsteiner of the Rockefeller Institute. Dr. Landsteiner first found that, when he mixed the red cells of one person with the blood serum of another, occasionally the red cells agglutinated. Cause of the occasional clumping, he found, was an antibody in the serum which was antipathetic to an agglutinogen in the red cells. Further research disclosed two agglutinogens, A and B. A person's red cells might contain A or B, or both (AB) or neither (O). Thus, according to their blood, there are four kinds of people in the world-A, B, AB, and 0. Every father...
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