Abstract
Summary
(1) By means of intestinal intubation in man the absorption rate of hydrolyzed and unhydrolyzed protein from the jejunum has been estimated. (2) Most of the nitrogen of a 4 to 5% solution of casein and gelatin is absorbed 40 to 50 minutes after its introduction directly into the small intestine. (3) The nitrogen of an amino acid mixture (hydrolyzed casein) of similar concentration is fairly completely absorbed 15 to 25 minutes after its administration in the same manner.
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