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Title: Fetal and placental weight relationships in the albino rat near term. Author: Norman NA, Bruce NW. Journal: Teratology; 1979 Apr; 19(2):245-50. PubMed ID: 473075. Abstract: The relationship of fetal weight to placental weight was examined in 34 albino rats on day 22 of gestation. The influence of maternal weight, fetal position and the number of fetuses in the litter and each uterine horn were assessed also. There was no indication that rats with heavier placentas had heavier or lighter fetuses. However, within each litter, placental weight was weakly correlated (r = 0.297, p less than 0.01) with fetal weight. Maternal weight at mating, although positively related to the number of corpora lutea, was not related to mean fetal or placental weight. The number of fetuses in the litter was negatively related to placental weight but there was no apparent relation to fetal weight. Fetuses and placentas at the ovarian end of the horn were significantly lighter than those at the vaginal end. The strength of the fetal weight:placental weight correlation in the rat is compared to those in other species.[Abstract] [Full Text] [Related] [New Search]