Overcoming the problem of bleeding. Overcoming the problem of bleeding. 3.0 / 5 based on 1 rating ? HistoryMedicine through time (OCR History A)GCSEAll boards Created by: StephanieCreated on: 02-06-11 18:24 Why were blood transfusions unsuccessful before 1901? Blood groups hadn't been discovered. 1 of 4 In 1901 who discovered blood groups. Karl Landsteiner. 2 of 4 Why couldn't blood be stored? It clotted. 3 of 4 What was found to stop blood clotting so it could be stored? Sodium Citrate. 4 of 4
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