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논문 기본 정보

자료유형
학술저널
저자정보
윤문석 (건국대학교축산대학) 정길생 (건국대학교축산대학)
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제8권 제2호
발행연도
1984.1
수록면
116 - 121 (6page)

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초록· 키워드

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These experiments were carried out to examine the effect of rapid thawing (500$^{\circ}C$/min) on the survival of 8-cell mouse embryos cooled slowly (0.5-1$^{\circ}C$/min) to precooling temperatures between -10 and 070$^{\circ}C$ before direct transfer ofembryos to -196$^{\circ}C$, and to compare the survival of embroys thawed slowly (20$^{\circ}C$/min) and rapidly (500$^{\circ}C$/min) after in vitro culture. In addition, the sensitivity of 8-cell mouse embroys to the rate of addition and removal of cryoprotectant at room temperauture, and the effect of developing stages on the survival of embryos frozen-thawed slowly were investigated. The results obtained were summarized as follows: 1. Embryos were survived in rapid thawing (500$^{\circ}C$/min) only when slow cooling was terminated at relatively high subzero teperaure (-20 to -60$^{\circ}C$). The highest survival rate(77.0%) in in vitro culture of embryos thawed rapidly was obtaeined after transfer to -196$^{\circ}C$ from -40$^{\circ}C$. 2. For the survival of embryos in slow thawing (20$^{\circ}C$/min.), slow cooling to lower subzero temperature (-50$^{\circ}C$ and below) was required before transfer of embryos to -196$^{\circ}C$. These results indicate that embryos transferred to -196$^{\circ}C$ from high subzero temprature contain much interacellular ice to damage them during slow warming but to permit survival of embryos after rapid warming. 3. The Survival rate (72.7%) of 8-cell mouse embryos after rapid addition and removal of cryoprotectant, DMSO at room temperature was similar to that (83.9%) after slow addition and removal of cryoprotectant at same temperature. 4. The survival rates of 1-, 2-, 4- and 8-cell embryos frozen-thawed slowly were 26.7, 76.4, 70.0 and 83.9%, respectively.

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