Figure 1. Dynamics of blastocyst formation during in vitro culture in PZM-5 medium of embryos derived by IVF from control and vitrified oocytes warmed at different temperatures.

Numbers of total blastocyst in each group are given in parentheses. Percentages (± SEM) with different superscripts (a, b) at the same time point differ significantly (P<0.05) by one-way ANOVA followed by Tukey’s multiple comparison test.