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Presence of a Pituitary Portal System in Elasmobranchs

Abstract

SINCE the discovery in the 1930's of the pituitary portal system in man, a similar system has been described in a large number of vertebrates, from amphibians to mammals1. Green did not notice a portal system in fishes, but suggests that the large sinusoids lying between the neurohypophysis and pars intermedia might serve a similar function, namely, a neurovascular contact involved in the control of the adenohypophysis.

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References

  1. Green, J. D., Amer. J. Anat., 88, No. 2 (1951).

  2. Rex, H., Morph. Jahrb., 17, 436 (1891).

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  3. Wingstrand, K. G., Symp. Comp. Endocrinol., edit. by Gorbman, A. (1959).

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MEURLING, P. Presence of a Pituitary Portal System in Elasmobranchs. Nature 187, 336–337 (1960). https://doi.org/10.1038/187336a0

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