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Accession IconGSE39589

Gene expression in bovine ovarian follicle granulosa

Organism Icon Bos taurus
Sample Icon 18 Downloadable Samples
Technology Badge Icon Affymetrix Bovine Genome Array (bovine)

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Description
Granulosa cells mature and die as ovarian follicles enlarge and die (undergo atresia) under the influence of hormones and intrafollicular factors. Later in follicular development, a fluid-filled antrum is formed, a process which is accompanied by a high rate of atresia. These small antral follicles (5 mm or less in diameter in the cow) contain granulosa of 2 different phenotypes, rounded or columnar, whereas follicles larger than 5 mm have the rounded phenotype only. Prior to ovulation, in larger follicles greater than 10 mm in size, the granulosa begin to migrate and differentiate in preparation for oocyte release and formation of the corpus luteum.
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