PRODUCTION OF OVOGONIA BY GERMINATIVE EPITHELIUM OF THE OVARY AT SOME MAMMALIA AND BIRDS

Ciência Rural

Mariana Sincai¹  Adrian Marcu¹ 

[1] ,Faculty of Veterinary Medicine Department of Cell Biology, Histology, Embriology

关键词: ovary;    epithelium;    mammalian;    hens;    proliferation;    ovogonia;    oocytes;    ovarian follicles;    ovário;    epitélio;    mamíferos;    galinhas;    proliferação;    ovogonia;    oócitos;    folículos ovarianos;   

DOI  :  10.1590/S0103-84781993000300018

来源: SciELO

【 摘 要 】

The studies were effected on ovaries from sows, cows, bitches, dous and hens. Our investigations revealed the generation of cellular rows of germinative epithelium into the cortex not only during the embrionary period but also in the adult ovary. The histological investigations revealed an intense proliferative process of the germinative epithelium of adult ovary which generated groups of ovogonia under the lamina basalis. From ovogonia developed oocytes and then ovarian follicles. The cause for the proliferation of ovary germinative epithelium could be: the multiple folliculary dehiscences, the premature degeneration of ovarian follicles and formation of the corpus luteum, phenomena that reduce continually the number of embrionary ovogonia.

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