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Immunohistochemical expression of ERα, ERβ, and PELP1 in grades 1 and 3 endometrial tumors. ERα expression (arrowheads) was high in grade 1 tumor and reduced in grade 3 tumor. Increased expression of both PELP1 and ERβ (arrows) was observed in grade 1 and 3 tumors. Magnification, ×200.
