Medicine: Four Pints of Blood

Blood from more than 8,000 volunteers poured into Red Cross Blood Donor Centers last week—and 2,000 lives that could not have been saved in World War I had a chance of being saved in World War II. For science has discovered how to store plasma, the life-giving liquid part of the blood: one pint of blood makes a pint of the plasma solution; four pints of plasma may mean the difference between life and death.

The technique of mass blood collection was first tested in Manhattan, which started over a year ago asking for blood to be shipped to England. Profiting by...

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