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Your search keyword '"Theca Cells ultrastructure"' showing total 4 results
Start Over Descriptor "Theca Cells ultrastructure" Language french
4 results on '"Theca Cells ultrastructure"'

1. [Ultrastructure of 3 beta HSDH (delta 5-3 beta hydroxysteroid dehydrogenase)-containing cells in ducks. III. Hybrid ducks (Anas platyrhynchos male X Cairina moschata female) during egg laying].

Author

Deray A and Gomot L

Subjects
Animals, Endoplasmic Reticulum ultrastructure, Female, Microscopy, Electron, Mitochondria ultrastructure, Theca Cells ultrastructure, Ducks physiology, Hybridization, Genetic, Hydroxysteroid Dehydrogenases metabolism, Ovary ultrastructure, Ovulation
Abstract

All the cells of the ovary of the hybrid duck (Peking duck X Barbary duck) which contain an active 3 beta HSDH enzyme show ultrastructural characteristics of steroid cells: a smooth, developed reticulum, tubularcrested mitochondria, a considerable "charge" in lipid inclusion. These cells are found not only in the internal theca of follicles as with the female gender, but also in the cortical zones void of germinal elements, a tendancy particular to the female.

Published
1976

2. [Ultrastructural aspects of cells with 3 beta-HSDH (delta 5-3 betahydroxysteroid dehydrogenase) activity in female ducks. II. Female Barbary ducks (Cairina moschata)].

Author

Deray A

Subjects
Animals, Endoplasmic Reticulum ultrastructure, Female, Inclusion Bodies ultrastructure, Lipid Metabolism, Mitochondria ultrastructure, Theca Cells enzymology, Ducks anatomy & histology, Hydroxysteroid Dehydrogenases metabolism, Ovarian Follicle ultrastructure, Theca Cells ultrastructure
Abstract

The cells making up the thin internal theca of the follicle of the Barbary duck and which contain are 3 beta HSDH enzyme show all of the ultrastructural characteristics of steroid cells: a well-developed smooth reticulum, tubular cristae mitochondria, a considerable load in lipid inclusionologous cells of the Peking duck since they are constantly more dense and their cristae are bigger and less numerous.

Published
1976

3. [Description, cytochemistry, and electron microscopic autoradiography of nucleolar granular spheres and micronucleoli of lizard (Lacerta vivipara Jacquin) pyriform cells].

Author

Hubert J

Subjects
Animals, Cell Nucleolus analysis, Cell Nucleolus ultrastructure, Female, Nucleoproteins analysis, RNA analysis, Theca Cells analysis, Lizards anatomy & histology, Ovary ultrastructure, Theca Cells ultrastructure
Abstract

The granular spheres are constituted of granules of 300-350 A and show a higher contrast than the nucleolar part where they are localised. The micronucleoli consist of fine fibrils. These two structures contain RNP. A relation between the granular spheres and the degeneration of the pyriform cells is suggested. The RNP of the micronucleoli, probably synthesized on perinucleolar DNA, migrate into cytoplasm.

Published
1975

4. [Ultrastructural aspects of cells with 3 beta-HSDH (delta-5-betahydroxysteroid dehydrogenase) activity in female ducks. I. Female Peking duck (Anas platyrhynchos)].

Author

Deray A

Subjects
Animals, Endoplasmic Reticulum ultrastructure, Female, Inclusion Bodies ultrastructure, Lipid Metabolism, Mitochondria ultrastructure, Theca Cells enzymology, Ducks anatomy & histology, Hydroxysteroid Dehydrogenases metabolism, Ovarian Follicle ultrastructure, Theca Cells ultrastructure
Abstract

The cells making up the thick internal theca of the follicle of the Peking duck and which contain an active 3 beta HSDH enzyme have a developed smooth reticulum, tubular crested mitochondria, a considerable load in slightly osmiophilic lipid inclusions; all of these characteristics are those of steroid cells. Various physiological states of these cells juxtapose themselves in different proportions according to the season.

Published
1976

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