|the stirring blood
|+ "The Stirring Blood". The discovery of the RH factor in blood, and the surprising meaning of the letters "RH." The broadcast originates from Hollywood. Dave Evans reporter tells the story of the Doctors who worked quietly to discover the different types of blood groups and so save the lives of many people undergoing blood transfusions. This later led to discovering the RH negative and Positive groups and so prevented the deaths of many children born to parents where the mother was RH negative and the father RH positive.
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