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논문 기본 정보

자료유형
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저자정보
김문규 (한양대학교 자연과학대학 생물학과) 이호준 (한양대학교 자연과학대학 생물학과) 이승재 (제일병원 산부인과 체외수정연구실) 전종영 (제일병원 산부인과 체외수정연구실)
저널정보
대한생식의학회 대한불임학회잡지 대한불임학회잡지 제14권 제1호
발행연도
1987.1
수록면
51 - 59 (9page)

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The present experiments have been bone to verify the effects of the warming rate and the degenerated blastomere(s) on further development of the frozen and thawed 4- and 8-cell mouse embryos. The embryos obtained from the mouse superovulated and mated were frozen in the solution of 15M DMSO in PBS containing 10% FCS at a slowly cooling rate($0.3^{\circ}C/min$). Two methods of warming slowly($8^{\circ}C/min$) and quickly ($450^{\circ}C/min$) were applied for thawing embryos. The thawed embryos were grouped according to the number of healthy blastomere(s) in the embryos. Some of the embryos were eliminated their degenerated blastomere(s) by means of a micromanipulation technique. The embryos were examined their developmental phases after 48 or 72 hrs incubation. The rates of blastocyst development from the frozen and thawed 4- and 8-cell embryos were 72.7% and 73.5%, respectively in case of thawing slowly, and were 78.9% and 80.0%, respectively in case of thawing quickly. The rate in case of thawing quickly was significantly higher than that in case of thawing slowly. The rates of blastocyst development from the frozen and thawed 4- and 8-cell embryos eliminated their degenerated blastomere(s) increased 5.9% and 24.4%, respectively compared with those of control groups not eliminated. The more number of degenerated blastomere(s) were eliminated from the embryos, the higher rate of blastocyst development was shown. It may be concluded from the results that the quickly thawing method is better for increasing survival rate than the slowly thawing one, and that the degenerated blastomere(s) in the frozen and thawed embryos affects as an interfering factor for further development of the embryos.

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