成本核算与管理Progression of oocyte maturation in different culture systems in vitro. Percentages (mean cates) of metapha II (M-II) oocytes at 28, 32, 36, 40, and 44 h of in vitro maturation in CC (
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57–60 in each time period), and NC (᭡: nϭ55–68 in each time period) groups.