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Document Type

Research

Abstract

Isolated segments of the intestine of turtle (Chrysemys picta) were found to transport D-galactose and 3-0-methyglucose against a concentration gradient in vitro at 30° C. Uptake of both sugars by the mucosal epithelium was directly dependent upon the concentration of sugar in the external fluid. Evidence indicated that 3-methylglucose is not metabolized by turtle intestinal tissue while D-galactose is. Both sugars were absorbed well by upper or middle intestinal segments, but 3-0-methyglucose was absorbed at a faster rate than D-galactose. It was concluded that neither substitution of the hydroxyl group at the third Carbon of the ring by a methyl group, nor reversal of hydroxyl and hydrogen groups at the fourth position, will block the active transport of molecules by the mucosal epithelium of this species.

Publication Date

1962

Journal Title

Proceedings of the Iowa Academy of Science

Volume

69

Issue

1

First Page

600

Last Page

605

Copyright

© Copyright 1962 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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