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They also get Dicumarol or a similar anticoagulant which reduces the danger of extension of the thrombus and formation of circulation-blocking clots.

A chemical that makes cattle bleed to death, Dicumarol, is now saving human lives.

Dr. Link and co-workers went on to get Dicumarol in pure form and then to synthesize it.

If a man takes Dicumarol capsules before or after an operation, dangerous blood clots may not form in his veins.

He found the guilty chemical in spoiled sweet-clover hay, named it Dicumarol because it is formed from the harmless chemical, coumarin, which gives fresh clover its smell.