ISSN:
1432-0878
Keywords:
Thyroid
;
Pituitary
;
Thyrotrops
;
Gonadotrops
;
Immunocytochemistry
;
Teleosts
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary Alcian blue and periodic acid-Schiff-positive “granular basophils” with electron-dense granules ±160 nm in diameter, and weakly developed irregular cisternae of the granular endoplasmic reticulum (GER) are present in the rostral pars distalis (RPD) and the proximal pars distalis (PPD) of immature rainbow trout. They all react with antisalmon αβ-gonadotropin. However, only granular basophils in the caudal RPD and the rostro-dorsal PPD, often bordering on and sometimes surrounded by neurohypophysial tissue, react with anti-human β-TSH. These cells, considered as the source of thyrotropin, show degranulation and dilatation of the GER-cisternae in fish treated with potassium perchlorate. The thyroids of the goitrogen-treated animals had relatively numerous small follicles with a high epithelium. The remaining granular basophils are gonadotrops.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00215785
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