SNAI1 and adenomyosis: No significant difference in Snail expression was observed between ectopic endometria in the proliferative and secretory phases (Fig. 3d-f, p > 0.05); however, ectopic endometria of adenomyosis showed significantly increased Snail expression in both the proliferative and secretory phases compared with normal endometria(Fig. 3a-f, p < 0.01).