Figure 4From: Preeclampsia serum upregulates CD40/CD40L expression and induces apoptosis in human umbilical cord endothelial cellsCRL1730 cell apoptosis after culture in the presence of normal pregnant or PE sera. Continuous variables were presented as mean ± SD and comparison of effect between two groups over time was performed by repeated measures of ANOVA and difference in apoptotic rate between two groups over time was significant (P < 0.001). n = 20 for each group.Back to article page