Dam unit

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Dam u·nit

a unit of activity of vitamin K; the smallest amount of vitamin K, per gram of chick weight per day, capable of producing normal coagulability in the blood of K-avitaminotic chicks after 3 days of oral administration.

Dam unit

An obsolete, semi-quantitative bioassay unit corresponding to the amount of vitamin K required to support normal coagulation in vitamin-K-deficient chicks.


Carl P. Henrik, Danish biochemist, 1895-1976, winner of 1943 Nobel Prize for discovery of vitamin K.
Dam unit - a unit of activity of vitamin K.
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