近交系ハツカネズミの繁殖と自然発生の奇形について
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概要
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The present paper gives an outline of some numerical data pertaining to implantation, prenatal mortality and spontaneous abnormality in eight strains of mice, derived from a total of 1125 foetuses from 158 females. The inbred strains of mice used were the A/He, AKR/Ms, CBA, C3H, dd, DM/Mk, MT and Swiss-albino. The results are outlined as follows: 1) the number of implanted foetuses and the rate of prenatal mortality were dissimilar by mouse strains, 2) there was no correlation between the rate of implantation and that of prenatal mortality, and 3) a few types of spontaneous abnormalities with pseudencephaly, polydactylia and abnormal tail were observed in dd, MT and Swissalbino strains. In the light of the results of the present study, it seems likely that both the implantation of foetuses and prenatal mortality are controlled by genetical as well as by environmental factors.
- 社団法人日本動物学会の論文
- 1965-04-15
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