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Macro- and microscopic observations were made on the cervix, vagina and vaginal vestibule of 39 piglets aged in 40 to 46 days (A group) and 18 porkers at 90 kg body weight (B group). The results obtained were as follows.<BR>1. The longitudinal (C1) and horizontal prominences (C2), low hill (C3), flat surface (V1) and vaginal vestibule (V2) portions were macroscopically distinguishable in the genital organ of both groups.<BR>2. As for the epithelium of the genital tract, characteristic differences were detected between vaginal vestibule and the other parts, but not between cervix and vagina.<BR>3. The muscle layers that compose basement of the rounded prominences and rugged mucosa of the low hill were examined. The muscle fibers in the prominences and low hill were more conspicu-ous than that in Vl.<BR>It is concluded that the border of the cervix and vagina is defined as that between C3 and Vl.
日本繁殖生物学会の論文