Medicine: Sterol for Bleeders

A person whose blood does not clot in three to six minutes is regarded by doctors as a poor surgical or obstetrical risk. No satisfactory chemical is known which will shorten the coagulation time of bleeders, but in last week's Science Dr. Aaron Lee Lichtman and Physiologist William Harold Chambers of Cornell University Medical College announced the discovery of a new compound which greatly reduces the clotting period in animals.

From the livers of fresh-killed dogs, lambs and pigs they extracted a sterol (solid alcohol) which they dissolved in sesame oil. Then they...

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