Figure 2From: Solid-surface vitrification is an appropriate and convenient method for cryopreservation of isolated rat folliclesProportions of viable follicles after different freezing procedures. The totally viability of follicles vitrified by SSV (64.76%) was slightly higher than that of the OPS group (62.38%) and significantly higher than that of the slow-rate freezing group (52.65%). *P < 0.05 versus the slow-rate freezing group.Back to article page