Results 171 to 180 of about 2,857 (229)
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Presence of dense-core vesicles in pinealocytes of the cat
Cell and Tissue Research, 1982Dense-core vesicles, 90–200 nm in diameter, were found in pinealocytes of the cat. They were present both in perikarya and cell processes.
John T. Hansen, Michal Karasek
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Ultrastructure of pinealocytes of the cotton rat, Sigmodon hispidus
Cell and Tissue Research, 1979Fine structural features of pinealocytes of cotton rats (Sigmodon hispidus) were examined. Golgi complexes, mitochondria, endoplasmic reticulum and polysomes are usual organelles seen in the perikaryonal cytoplasm of pinealocytes. Many non-granulated vesicles (40 to 80 nm in diameter) and a few granulated vesicles (about 100 nm in diameter) are ...
Larry J. Petterborg +4 more
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Evolution and nature of the dense bodies in the chicken pinealocytes
Cells Tissues Organs, 1979The acid phosphatase reaction, applied to light and electron microscopy, was studied in the chicken pineal gland from the moment of hatching until 2 months of age. From the moment of hatching there is a great amount of acid phosphatase, which is mainly found in the vicinity of the lumen of both the recess and large follicles.
J. Boya, J. Calvo
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Novel features of hamster pinealocyte ultrastructure
Tissue and Cell, 1974Abstract Pineal glands from young adult hamsters ( Mesocricetus auratus Water-house) kept on a 12 : 12 light : dark photoperiod were examined by electron microscopy. Ultrastructural features of nuclei, mitochondria, and centrioles that have not been reported previously are presented in this paper.
Mathew J. Nadakavukaren +2 more
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Fos-like immunoreactivity in cultured rat pinealocytes
Histochemistry, 1991The expression of Fos-like proteins in cultured rat pinealocytes was investigated immunocytochemically. Pineal glands of 2-day-old rats were dissociated and maintained in culture for 13 days, the last 24 h deprived of animal sera. The pinealocytes were identified morphologically and by serotonin-immunostaining. Incubations with phorbol dibutyrate (PDBu)
Jari Koistinaho, A. Tuulivaara
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Ultrastructure of pinealocytes of the kangaroo rat (Dipodomys ordi)
Cell and Tissue Research, 1982The ultrastructure of the pinealocytes of the wild-captured ord kangaroo rat (Dipodomys ordi) was examined. A homogeneous population of pinealocytes was present in the pineal gland of the kangaroo rat. The Golgi apparatus, granular endoplasmic reticulum, mitochondria, lysosomes, dense-core vesicles, vacuoles containing a flocculent material and lipid ...
Edward C. Hurlbut +3 more
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Intramitochondrial crystalloids in rat pinealocytes
Cell and Tissue Research, 1982In the present study the rare occurrence of intramitochondrial crystalloid inclusions in the rat pinealocytes is described. They lie within the mitochondrial matrix and consist of a lattice of moderately electron-dense lines. Intersections at regular intervals form rhomboid-like subunits. The significance of these inclusions is not known.
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Gap junctions between guinea-pig pinealocytes
Cell and Tissue Research, 1984In accordance with previous results in rats, belt-like arrangements of fenestrated gap junctions have been found around the collicular segments of pineal cells in the guinea pig. In addition, macular interpinealocyte gap junctions have been observed in this species.
S. K. Huang, Roland Taugner
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Existence and function of opioid receptors on nammalian pinealocytes
Journal of Pineal Research, 1998Abstract: Previous studies in our laboratories have identified a single population of opioid receptors in bovine pineal gland, which we have chosen to characterize further on pinealocytes isolated from the cow and rat pineal gland. The bovine pinealocytes isolated by trypsinization or mechanical manipulation revealed receptor density (Bmax) values of ...
Banthit Chetsawang +4 more
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Influence of gonadotropic hormones on the ultrastructure of rat pinealocytes [PDF]
Cell and Tissue Research, 1978 The influence of gonadotropic hormones on the ultrastructure of rat pinealocytes was studied. Human chorionic gonadotropin (HCG) as well as pregnant mare serum gonadotropin (PMSG) caused a marked activation of pinealocytes. It is characterised by a conspicuous proliferation of the granular endoplasmic reticulum and Golgi apparatus as well as an ...
M. Karasek, K. Marek
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