Figure 1. Cumulus cell of the oocytes in the endometriosis and control groups.
The cumulus cells from the control group show the same ultrastructural cytoplasmic characteristics of the cumulus cells surrounding the oocytesas in the endometriosis group (A,B). The tubular cristae of the mitochondria (arrows) are well developed and evenly distributed. N = nuclei; M = mitochondria; Scale bar (A,B) = 500 nm.