Figure 10From: Solid-surface vitrification is an appropriate and convenient method for cryopreservation of isolated rat folliclesEstradiol production in different groups after in vitro culture. The estradiol level in the SSV group was significantly higher than those in the OPS and slow-rate freezing groups. Columns are mean ± S.D. *P < 0.05 versus the OPS and slow-rate freezing groups.Back to article page