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| Q. |
Blood groups were discovered by - |
| A. | Altmann |
| B. | Landsteiner |
| C. | Losch |
| D. | Ronald Ross |
| Answer» B. Landsteiner | |
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Explanation: Karl Landsteiner was an Austrian biologist and physician. He is noted for having first 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 having identified, with AlexanderS. 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. |
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