THE EXCRETION OF COPROPORPHYRIN I FOLLOWING HEMORRHAGE IN DOGS

Abstract
In the dog, bleeding results in an increase in the rate of excretion of coproporphyrin Type I. The rate of excretion of coproporphyrin I varies with the rate of formation of Type III porphyrin as new Hb. Coproporphyrin Type I is probably a byproduct in the synthesis of the Type III porphyrin com- pounds. The rate of excretion of coproporphyrin I is probably an index of hematopoietic activity under normal conditions.

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