Les cellules de Ia granulosa des petits follicules ovariens de Canes: Cane Pékin (Anas platyrhynchos), Barbarie (Cairina moschata) et hybride: Pékin mâle × Barbarie femelle. I. Aspect structural comparé en phase de repos (hiver) et d'activité sexuelle (printemps)

Deray, A

doi:10.1016/s0022-5320(79)90148-5

Cited by 5 publications

(1 citation statement)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ultrastructural investigations of ovarian follicles have been performed in only a few avian species, including domestic fowl (Bellairs, 1964(Bellairs, , 1965(Bellairs, , 1967Perry et al, 1978), Japanese quail (Ito et al, 2003), duck (Deray, 1979) and goose (Kovács et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Ultrastructural observations of previtellogenic ovarian follicles of dove

Zarnescu

2004

Zygote

View full text Add to dashboard Cite

Dove ovarian follicle is a complex structure composed of oocyte surrounded by a somatic compartment consisting of theca externa, theca interna and granulosa. The structure of ovarian follicle (1 and 2 mm) of dove was studied by electron microscopy. The granulosa was pseudostratified in the 1-mm-diameter follicles and stratified with two or three irregular rows of cells in the 2-mm-diameter follicles. In the larger follicle indentations between oocyte and granulosa cells become more numerous and the microvilli of granulosa cell elongated to form a zona radiata with similarly elongated oocyte microvilli. Lining bodies were present at the tips of granulosa microvilli and in the cortical region of the oocyte. In the oocyte cortex were observed coated pits, coated vesicles, dense tubules, multivesicular bodies and primordial yolk spheres. Primordial yolk spheres may contain lining bodies and were observed fused with dense tubules and multivesicular bodies or associated with smooth cisternae.

show abstract

Section: Introductionmentioning

confidence: 99%

Ultrastructural observations of previtellogenic ovarian follicles of dove

Zarnescu

2004

Zygote

View full text Add to dashboard Cite

show abstract

The fine structure of the follicular cells in growing and atretic ovarian follicles of the domestic goose

1992

View full text Add to dashboard Cite

The structure of follicular layer of growing and atretic follicles in the ovary of the domestic goose, was studied by electron microscopy. In small follicles, the wall is lined with a narrow layer of tightly packed small, cuboidal cells separated from the thecal tissue by the basal lamina. During growth, they transform into tall, columnar cells arranged in a single row. The cells display several peculiar ultrastructural features. First, annulate lamellae are commonly observed. Second, cytoplasmic dense-cored granules accumulate in close association with fenestrated cisternae and networks of tubuli derived from the RER. They consist of spheres and strands of amorphous substance of unknown origin. Third, the cells contain many transosomes, a unique organelle of the avian follicle cell consisting of a dense plaque associated with ribosome-like particles. The mature forms of transosomes are located at the tips of lateral and apical cell projections, while bodies thought to be their precursors, are found in the apical cytoplasm. In follicles larger than 8 mm in diameter, most of the transosomes and their precursors have disappeared. Follicular atresia occurs in all of the size-classes of follicles investigated. A loss of transosomes (in follicles up to 8 mm in diameter) and an accumulation of lipid droplets, are the first atretic events detectable by electron microscopy. Morphologic features, including deep nuclear indentations, accumulation of lipid droplets frequently encircled by membrane whorls, dilation and disintegration of RER cisterns, swelling of mitochondria and accumulation of dense irregular masses of unknown origin in the cytoplasm, are taken as evidence for advanced degradation.(ABSTRACT TRUNCATED AT 250 WORDS)

show abstract

The annulate lamellae—From obscurity to spotlight

Kessel

1989

Electron Microscopy Reviews

View full text Add to dashboard Cite

Les cellules de Ia granulosa des petits follicules ovariens de Canes: Cane Pékin (Anas platyrhynchos), Barbarie (Cairina moschata) et hybride: Pékin mâle × Barbarie femelle. I. Aspect structural comparé en phase de repos (hiver) et d'activité sexuelle (printemps)

Cited by 5 publications

References 35 publications

Ultrastructural observations of previtellogenic ovarian follicles of dove

Ultrastructural observations of previtellogenic ovarian follicles of dove

The fine structure of the follicular cells in growing and atretic ovarian follicles of the domestic goose

The annulate lamellae—From obscurity to spotlight

Contact Info

Product

Resources

About