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Biology of Reproduction, Vol 12, 293-304, Copyright © 1975 by Society for the Study of Reproduction
1 Department of Pathology, Beth Israel Hospital and Harvard Medical School, Boston, Massachusetts Carbonic anhydrase activity was localized histochemically in the ovary, fallopian tube, and uterine
corpus of seven mammalian species: mouse, rat, guinea pig, rabbit, cat, dog, and human. The enzyme
was present in fallopian tube and uterine epithelium and non-vascular smooth muscle, although there
was considerable species variation. With the exception of the cat and rabbit, non-erythrocytic activity
was seen in the granulosa cells of the ovary and in all species reaction product was present in the surface
epithelium. In the cat, no other ovarian sites of activity were present, but, in the rabbit, the enzyme was
demonstrated in the oocyte of maturing follicles. Biochemical assays confirmed the occurrence of
nonerythrocytic carbonic anhydrase in the guinea pig ovary. The presence of the enzyme in multiple
sites throughout the female reproductive tract suggests its importance in reproduction and raises the
possibility that inhibitors given during particular stages of conception might be useful as antifertility
agents.
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