Ovarian follicle atresia
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Ovarian follicle atresia is the periodic process in which immature ovarian follicles degenerate and are subsequently re-absorbed during the follicular phase of the menstrual cycle. Typically around 20 follicles mature each month and only a single follicle is ovulated. The rest undergo atresia. That single dominant follicle becomes a corpus luteum following ovulation.
- tumor necrosis factor alpha (TNF alpha) and receptors
- Fas ligand and receptors
- TNF-related apoptosis-inducing ligand (TRAIL; also called APO-2) and receptors
- APO-3 ligand and receptors
- PFG-5 ligand and receptors
In addition, two intracellular inhibitor proteins, cellular FLICE-like inhibitory protein short form (cFLIPS) and long form (cFLIPL), which were strongly expressed in granulosa cells, may act as anti-apoptotic factors.
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