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Reconstructed histological sections of the ovary stained with hematoxylin and eosin in the control group (A) and the rats treated with letrozole (B) and estradiol valerate (C). The structural changes included an increase in the volume of the ovary, cortex, and cysts, which was detected in the ovaries treated with letrozole and estradiol valerate. The asterisks indicate the cysts. Scale bar=800 µm.
