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  • Title: [Changes of the uterine size during pregnancy in cynomolgus monkeys (Macaca fascicularis) (author's transl)].
    Author: Fujiwara T, Suzuaki Y, Honjo S.
    Journal: Jikken Dobutsu; 1977 Jan; 26(1):29-34. PubMed ID: 404166.
    Abstract:
    This paper describes changes in the uterine size during the normal course of pregnancy in cynomolgus monkeys. Twenty-four females which had conceived by 3-day individual mating with a male were laparotomized 4,5,6,7,8,9,10,15 and 20 weeks after conception. The width, thickness and length of uterus were measured by a pair of callipers. Them, the uterine volume was estimated by the formula, V = 4/3 piab2 (a, b: uterine length x 1/2, uterine width x 1/2). The increase in the uterine width (y) during pregnancy could be expressed as a linear equation: y = 0.35x + 1.48 (x: weeks after conception). The thickness of pregnant uteri could be represented by a a linear equation: y = 0.36x + 1.40. From the 4th to the 20th week of pregnancy, the uterine length increased along a straight line expressed as a linear equation: y = 0.58x + 1.14. Except for nonpregnant uteri, the change in the uterine volume after pregnancy could be expressed as a linear logarithmic equation: log y = 2.319 log x -0.315. These 24 pregnant monkeys had followed the normal course of gestation until the time of laparotomy without any abnormality in their fetuses of their placentas, indicating that the values obtained throughout this study are of practical use for taking care of pregnant cynomolgus monkeys.
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