caa a22 4500 469082925 CHVBK 20180323132956.0 cr unu---uuuuu 170328e19920201xx s 000 0 eng 10.1007/BF00302962 doi (NATIONALLICENCE)springer-10.1007/BF00302962 Shimada Takaki Department of Anatomy, Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, 105, Tokyo, Japan aut Immunohistochemical localization of keratin in bull, goat, and sheep anterior pituitary glands [Elektronische Daten] [Takaki Shimada] Summary: Immunohistochemical localization of keratin, an intermediate filament protein, was studied in bull, goat, and sheep anterior pituitary glands, i.e., in animals of the order Artiodactyla. Strong immunoreactivity was detected in the cells of the marginal layer of bull and goat, as well as in cysts or large follicles in the anterior lobe of all 3 species. In addition, a number of stellateshape cells were immunoreactive for keratin and were distributed throughout the anterior lobe. The localization of keratin-positive cells in light-microscopic preparations correlated precisely with the localization of folliculo-stellate cells in adjacent ultrathin sections. In ultrastructural studies, many slender and elliptical membranous components which were different from smooth endoplasmic reticulum were observed in the cytoplasm of the some keratin-positive cells. Some of the folliculostellate cells in the 3 species were also immunoreactive for the α subunit of S-100 protein, which exists in some epithelial cells. On the other hand, immunolocalization of glial fibrillary acidic protein, a glial cell marker, could not be demonstrated in the anterior pituitary glands of the 3 species studied. These results suggest that keratin-positive folliculo-stellate cells express epithelial-like characteristics. Springer-Verlag, 1992 Pituitary gland, pars anterior (distalis) nationallicence Folliculo-stellate cells nationallicence Keratin nationallicence S 100 protein nationallicence Cow, goat, sheep (Artiodactyla) nationallicence Cell and Tissue Research Springer-Verlag 267/2(1992-02-01), 251-260 0302-766X 267:2<251 1992 267 441 https://doi.org/10.1007/BF00302962 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00302962 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Shimada Takaki Department of Anatomy, Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, 105, Tokyo, Japan aut NATIONALLICENCE 773 0- Cell and Tissue Research Springer-Verlag 267/2(1992-02-01), 251-260 0302-766X 267:2<251 1992 267 441 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer