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Representative morphology of bovine OGCs before and after maturation culture. After 14 days of growth culture, OGCs with surviving oocytes were subjected to maturation culture for 22 h. OGCs collected from 0.4−0.7 mm antral follicles (0) and 4−6 mm antral follicles (In vivo) were cultured as for in vivo control. A scale bar represents 200 µm.
