The MOD of CB1 staining was decreased significantly in both the eutopic and ectopic endometrium from adenomyosis than in the normal endometrium (for the proliferative phase P = 0.028 and P < 0.001, respectively; for the secretory phase, both P < 0.001) (Figures 1(j) and 1(k)). This evidence concerns the gene CNR1 and adenomyosis.