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Representative illustration of IL-1RII immunostaining in the endometrium of women with and without endometriosis. A: Normal secretory day 24, luminal staining score 3, cellular staining score 2 in stromal and epithelial cells. B: Endometriosis stage secretory day 26, luminal staining score 0, cellular staining score 2 in stromal and epithelial cells. Note the lack of staining within the lumen of endometrial glands in B. Original magnification, ×160.
