Figure 1. RSV promotes the developmental competence of aged oocytes. (A) Fresh oocytes were cultured in vitro with or without RSV for 8 h. These oocytes were parthenogenetic-activated and cultured for additional 3.5 days. Bar = 200 μm. (B) Statistical results of blastocyst rate in (A). (C) Quantitative analysis of blastocyst cell numbers in (A). Embryos were stained with DAPI. All experiments were performed in triplicates and the data represent the means ± SEM. * p < 0.05.