Percentage of apoptotic cells in epithelial (A) and stromal cell (B) compartments in human endometrium explants obtained from normal women and women with endometriosis. Histological sections were evaluated by TUNEL technique (see text). The results are given as mean ± SEM from: 5 and 6 proliferative; 5 and 6 early secretory; 4 and 5 mid secretory; 7 and 6 late secretory eutopic endometria obtained from women without (normal) and with endometriosis, respectively. *p < 0.05 vs. normal endometria. °p < 0.05 vs. early secretory phase. #p < 0.05 vs. late secretory phase.