Bacilliform inclusions in cells of the proximal pars distalis in the pituitary of four species of Tilapia (Teleostei) |
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Authors: | Ezra Rahamim Clara Sandri Konrad Akert Mordechai Abraham |
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Institution: | (1) Department of Zoology, The Hebrew University of Jerusalem, Jerusalem, Israel;(2) Brain Research Institute, University of Zürich, Zürich, Switzerland |
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Abstract: | Summary Thin sections and replicas of freeze-etched pituitaries from six species of the teleostean family of Cichlidae were studied by electron microscopy. Four species belonging to the genus Tilapia exhibit rod-like structures, i.e., bacilliform inclusions (BI), about 1–2 m in length in cells of the proximal Pars distalis. The BI are found either isolated or fused in small groups. They are enclosed in an envelope similar to that of secretory granules. Both the BI and the secretory granules give a positive PAS-reaction.Abbreviations
BI
bacilliform inclusion
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GTH
gonadotroph hormone
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STH
somatotroph hormone
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TSH
thyrotroph hormone
This research was supported by a grant from the National Council for Research and Development, Israel, and the GKSS Geesthacht-Tesperhude, Germany |
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Keywords: | Pituitary Thyrotroph hormone Bacilliform inclusions Teleostei Cichlidae |
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