Acta Histochem 1981 Jan 01;682:238-47.

[Histochemical localization of carbonic anhydrase in flask cells of the clawfrog mesonephros (Xenopus laevis Daudin) (author's transl)].

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Carbonic anhydrase activity was demonstrated in the flask cells of intermediate segments and collecting tubules of the clawfrog-mesonephros with the cobalt-bicarbonate method of Häusler (1958) and Hansson (1967). Additional the luminal surface of proximal and distal convoluted tubules reacted positively. By electron microscopy the enzyme activity in the flask cells was localized mainly on the surface of microvilli like cytoplasmic processes which lined the lumen of intracellular secretion capillaries. The existence of carbonic anhydrase in the flask cells is related to a possible physiological function of these cells.

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