Charles Richard Drew became interested in studying blood as a student at McGill University in Montréal, Québec, Canada, during the late 1920s and early 1930s. At that time, medical science had not yet determined how to preserve blood, a dilemma that became Drew's mission. Later, while interning at Presbyterian Hospital in New York, New York, and pursuing a doctorate at Columbia University, Drew discovered that blood plasma, the liquid portion of the blood without cells, can be preserved for long periods of time, unlike whole blood, which deteriorates after a few days in storage. He also found that blood plasma can be substituted for whole blood in transfusions.
In the late 1930s Drew set up an experimental blood bank at Presbyterian Hospital and wrote a thesis entitled “Banked Blood: A Study in Blood Preservation,” which earned him a doctor of science in medicine from Columbia University in 1940 ...
