Abstract

1. 1. The effect of Hg 2+, Cd 2+ and Pb 2+ on the intestinal transport of d-glucose and l-tyrosine was studied in everted sacs of small intestine. 2. 2. Hg 2+, Cd 2+ and Pb 2+ (10 −5 and 10 −4) singly or in combination inhibit the active transport of d-glucose (10mM) and l-tyrosine (2mM) in rat and pigeon small intestine. 3. 3. The presence of other ions (Mg 2+, Zn 2+ and SeO 3 2) diminishes the toxic effect of heavy metal ions, rendering them less effective.

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