Summary
In the adenohypophysis of Cichlasoma biocellatum, which may be divided into a pro-, meso-, and meta-adenohypophysis, seven cell types can be distinguished. Treatment with deionized- and salt water effects three of these cell types. The rostral acidophils, which were proved to produce prolactin by means of an immunochemical method, are distinctly stimulated in deionized water and markedly inactivated in 25% sea-water. The putative ACTH cells, bordering neurohypophysial branches in the pro-adenohypophysis, are moderately stimulated by both treatments. The presumptive TSH cells, which in control animals appear to be very active, do not show marked changes in deionized water; they are strikingly inactivated, however, in salt water specimens.
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We wish to express our gratitude to Prof. Dr. P. G. W. J. van Oordt for critically reading the manuscript, to Dr. L. Boomgaart for improving the english, and to Dr. R. E. Ballieux and Dr. N. A. J. Mul from the University Hospital of Utrecht for contributing to the immunological part of this study. The help of Mr. M. J. van Oosterum who reared the animals, of Messrs. H. van Kooten and P. van Velzen for the illustrations and of Mrs. M. P. J. Stroband for technical assistance is gratefully acknowledged. Thanks are also due to the Endocrinology Study Section of the National Institutes of Health, Bethesda, Maryland (U.S.A.), for kindly presenting ovine prolactin.
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Mattheij, J.A.M., Stroband, H.W.J. & Kingma, F.J. The cell types in the adenohypophysis of the cichlid fish Cichlasoma biocellatum regan, with special attention to its osmoregulatory role. Z. Zellforsch. 118, 113–126 (1971). https://doi.org/10.1007/BF00331770
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DOI: https://doi.org/10.1007/BF00331770