In vivo change in the germinal vesicle of the sow oocyte during the follicular phase before the ovulatory LH surge.
Reprod Nutr Dev (1980)
; 20(3A): 673-80, 1980.
Article
em En
| MEDLINE
| ID: mdl-6891481
ABSTRACT
This study describes a morphological change in the germinal vesicle (GV) of the sow oocyte during the follicular phase preceding the ovulatory LH surge. Estrus synchronization obtained with methallibure treatment provided a reference point for dating the onset of the follicular phase of each sow in the experiment. The oocyte GV's of preovulatory follicles having a diameter of less than 2 mm (during the first 2 to 3 days of the follicular phase) showed uniformly dispersed chromatin with no condensation, while the GV's of oocytes from preovulatory follicles of more than 2 mm diameter (from days 2 and 3 of the follicular phase to day 5) presented condensed chromatin in the shape of a crown or horseshoe surrounding the nucleolus, and irregular chromatin clusters in the nucleoplasm; these clusters were usually found lying against the nuclear membrane.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Oócitos
/
Óvulo
/
Estro
/
Hormônio Luteinizante
Limite:
Animals
/
Pregnancy
Idioma:
En
Revista:
Reprod Nutr Dev (1980)
Ano de publicação:
1980
Tipo de documento:
Article