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The expression of ER protein in endometrial tissue of IUA patients (400×). (A) Total score for immunohistochemical staining is 1.5; (B) total score for immunohistochemical staining is 2; (C) total score for immunohistochemical staining is 3; (D) total score for immunohistochemical staining is 4 points. IUA, intrauterine adhesions; ER, estrogen receptor.
