Fig. 1. Expression of nucleotide-binding oligomerization domain 1 (NOD1) in endometrium (EN) and endometriosis. HE staining identified eutopic (A, 40×) and ectopic (C, 40×) endometrium morphology. Both eutopic (n=5) and ectopic (n=6) endometrium tissues expressed NOD1 (B and D, 40×). NOD1 mRNA expression level in endometrium from healthy donor (EN) and endometriosis (Fig. 1 EN and endometriosis); ectopic-endometrium (ect-EM) and eutopic-endometrium (eut-EM) were compared to the tissues from patients with endometriosis. ect-EM represents endometriosis and eut-EM represents the normal EN from the same patient. EN, n=16; endometriosis, n=41; eut-EM and paired ect-EM, n=11.