Abstract
Summary
In the golden hamster, the absorption of 47Ca from ligated duodenal segments in situ was significantly greater (66% of dose) than that of the ileum (36% of dose). The calcium-binding activity of supernatant fluid prepared from intestinal mucosa was also significantly greater in the duodenum than in the ileum. There is, thus, a direct correlation between 47Ca absorption and intestinal calcium-binding activity in the two intestinal segments of this species, in contrast to previous findings by others based on in vitro everted gut procedures for measuring absorption.
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