| Type | MGI:General | Description | females show fewer primordial and pre-antral follicles and a significantly lower number of antral follicles at 12 weeks of age in vitro, secondary follicles cultured in the presence of FSH show a markedly smaller follicle diameter starting from day 4; follicles largely stagnate in the preantral stage with only few developing to the preovulation stage on day 6, indicating impaired preantral follicle development with poor response to FSH |
