File talk:Ovary- follicle stages.jpg

From Embryology

Oocyte-granulosa-theca cell interactions during preantral follicular development. Orisaka M, Tajima K, Tsang BK, Kotsuji F. J Ovarian Res. 2009 Jul 9;2(1):9. PMID: 19589134 | J Ovarian Res.