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Uterine section of rats showing marked inflammation leading to narrowing of lumen (a), chronic endometritis with sloughing off of the lining epithelium and damage to glands (b) and severe vacuolar degeneration in the lining endometrial cells (c) after exposure to lead at 300 ppm level for 28 days (H and E, ×4, ×20 and ×40)
