Fig. 1From: Concentrations of oocyte secreted GDF9 and BMP15 decrease with MII transition during human IVMImmature oocytes collected from the surplus medulla tissue during OTC. (A) Naked oocyte (NO). (B) Cumulus-oocyte complex (COC) with small cumulus mass (S-COC). (C) COC with large cumulus mass (L-COC). Scale bars: 100 µmBack to article page