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논문 기본 정보

자료유형
학술저널
저자정보
이상진 (건국대학교 축산대학) 정길생 (건국대학교 축산대학)
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제8권 제1호
발행연도
1984.1
수록면
29 - 35 (7page)

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These experiments were carried out to obtain basic information necessary for in vitro culture of aggregated mouse embryos. Inbred ICR mice were used to obtain embryos. The zona pellucida was removed by placing the embryos in Whittingham's medium containing 0.5% protease for about 5-10minutes at 37$^{\circ}C$. Total 263 pairs of 2-, 4- and 8-cell zona free mouse embryos were subjected to aggregation by physical pressure and cultured in Whittingham's medium under the gas phase of 5% CO2 in air at 37$^{\circ}C$ for 24 to 60 hours. The results obtained in these experiments were summarized as follows: 1. Time needed for fusion of 2-, 4- and 8-cell embryos were 0-3, 0-3 and 0-3 hours, respectively and average time needed for in vitro development of 2-, 4- and 8-cell embryos after aggregation to morula and blastocyst were 42, 30 and 13.5 hours, and 51, 39 and 27 hours, respectively. 2. Of total 263 pairs of naked embryos, 227 were firmly aggregated together and the rats of aggregation in 2-, 4- and 8-cell embryos were 71.8, 88.3 and 97.0%, respectively. 3. The rates of aggregated pairs which obtained from 2-, 4- and 8-cell embryos developed to morula were 96.7, 95.6 and 96.9%, respectively, and embryos developed to blastocysts were 88.5, 89.7 and 90.8%, respectively. 4. Conspicuous differences in size of volume and inner cell masses between single and double blastocysts were observed. Although a single blastocolic cavity was formed in most double blastocysts, several formed two distinct cavities from the very beginning.

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