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Biol Bull 99: 152-156. (October 1950)
© 1950 Marine Biological Laboratory
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ALKALINE PHOSPHATASE ACTIVITY IN KIDNEYS OF GLOMERULAR AND AGLOMERULAR MARINE TELEOSTS

MARIE J. BROWNE 1, MARJORIE W. PITTS 1, and ROBERT F. PITTS 1

1 The Department of Physiology, Syracuse University College of Medicine, the Marine Biological Laboratory, Woods Hole, Mass., and the Mt. Desert Island Biological Laboratory, Salisbury Cove, Maine

The kidneys of 35 specimens of 11 marine fish have been studied by histochemical methods for the presence and distribution of alkaline phosphatase. All fish examined, with the exception of the eel, exhibited alkaline phosphatase in the brush border of the "proximal" segment. Since the ten species which exhibited the characteristic location of the enzyme included three aglomerular teleosts (toadfish, pipefish, and goosefish), one equivocal aglomerular teleost (daddy sculpin), four glomerular teleosts (sea robin, puffer, flounder, and long horn sculpin), and two glomerular selachians (skate and dogfish), it is concluded that the enzyme of the brush border must be concerned in tubular processes shared by forms with and without glomeruli. It cannot, therefore, function solely in the absorption of glucose from the glomerular filtrate.




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J. B. LONGLEY
Alkaline Phosphatase in Kidneys of Aglomerular Fish
Science, January 27, 1956; 123(3187): 142 - 143.
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