家兎胚におけるsex chromatin : I. sex chromatin 染色核の局在性
- Sex chromatin in rabbit embryos : I. Localization of sex chromatin positive nuclei
- カト ハイ ニオケル sex chromatin : I. sex chromatin センショク カク ノ キョクザイ セイ
In order to facilitate the sexing of rabbit embryo, the appearance of sex chromatin and the localization of sex chromatin in blastocyst were investigated. The results are summarized as follows: 1. Sex chromatin in fertilized ova was not observed from 1 to 4 days of age. It seems to be due to absent of resting-stage nuclei. 2. Sex chromatin positive nuclei ware observed 35.4% or 51.2% in blastocysts of 5 or 6 days of age, respectively. 3. In 5 ages eggs, the localization of sex chromatin positive nuclei was observed, namely, the section of A (inner cell mass) was higher than the section of D (the area oppositing to inner cell mass).
家畜繁殖研究会誌 16 (1), 30-32, 1970-09