Fig. 5. Restoration of folliculogenesis in Cx37-deficient ovaries by replacement with Cx43. Sections of wild-type ovaries (A) and ovaries from Cx37-deficient mice carrying the transgene (C) revealed all stages of folliculogenesis, including large antral follicles, whereas sections from Cx37-deficient ovaries without the transgene (B) did not contain follicles beyond early antral stages. Bar, 100 µm.