Mammary glands, uterus, vagina, kidneys, and liver were dehydrated by a series of ethanol solution, embedded in paraffin blocks before cutting into 5 μm sections, and stained with hematoxylin and eosin as previously reported by Zingue et al. [9 (link), 15 (link)]. Histomorphological changes were determined under an Axioskop 40 microscope connected to a computer where the image was transferred using MRGrab1.0 and Axio Vision 3.1 software (Zeiss Hallbergmoos, Germany). Atlas and histologic classification of tumors of rat mammary gland from Russo and Russo [16 ] were used in this study.
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