Medicine: Blood Saver

When the Red Cross takes a pint of blood from a patriotic donor, the blood is centrifuged to separate the light-colored fluid (plasma) from the red blood corpuscles. The plasma—60% of the blood's volume—may save a life in Africa; the red residue goes down the sewer, because red blood corpuscles quickly spoil. New York's Lederle Laboratories alone discard over 1,000 pints a day.

Dr. Warren Cooksey, technical supervisor of Detroit's blood bank, thought the red blood cells should be saved if possible—they are the material needed in a large proportion of hospital transfusions (e.g., anemia), are ordinarily given to patients in whole...

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