Fig. 6

Morphology of oocytes recovered as in vivo matured MII oocytes or immature oocytes. The recovered MII oocytes (A, C) sometimes were either surrounded by expanded corona radiata cells or naked. The recovered immature oocytes (B, D) were either surrounded by several compact granulosa cell layers or were naked. No significant morphological differences were seen between either in vivo matured oocytes recovered from FSH + hCG stimulated (A) or FSH-primed ovaries (C); or immature oocytes (B vs. D, respectively)