Endometrium: Menstrual, Proliferative, & Secretory Phases

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Histological sections of the endometrium stained with H&E, showing three phases of the menstrual cycle. The menstrual phase displays necrotic tissue, extravasated blood, and disintegrating endometrial glands. The proliferative phase shows simple ciliated columnar epithelium, straight endometrial glands, and spiral arteries within the stroma. The secretory phase features sawtooth-shaped endometrial glands and a dense endometrial stroma. The image illustrates cyclical changes in endometrial structure during menstruation, the proliferative, and secretory phases.
Histology Image
University of Tasmania, J. Chapman

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