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논문 기본 정보

자료유형
학술저널
저자정보
윤종택 (국립안성산업대학교) 이호준 (국립안성산업대학교) 한기영 (국립안성산업대학교)
저널정보
한국동물번식학회 한국수정란이식학회지 한국수정란이식학회지 제13권 제2호
발행연도
1998.1
수록면
191 - 197 (7page)

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Immature nocytes and in VitrO matured Oocytes collected from the slaughtered Korean cattle were frozen slowly with 10% ethylene glycol+5% polyvinyl pyrolidine+0.05M trehalose (l0EPT), 10% ethylene glycol+5% ficoll+0.05M sucrose (1OEFS), or 10% ethylene glycol+5% ficoll+0.05M trehalose (l0EFT) by cell freezer (experiment 1). And also,They were ultra-rapidly frozen with 30% ethylene glycol+10% polyvinyl pyrolidine+0.5M trehalose (3OEPT) or 30% ethylene glycol+18% ficoll+0.5M sucrose (3OEFS) using electron microscope grid (experiment 2). In experiment 1, the cleavage rate was 23.0% when immature oocytes were frozen slowly using various cryoprotectants descrihed above, and 5.1% of cleaved oocytes developed to over morula stage after in Vitro fertilization (IVF). There were no significant differences among these groups. When matured oocytes were frozen slowly, the total cleavage rate was 19.7%, and over morula stage was 3.2%. lOEPT (4.8%) and EFS (4.4%) were slightly more effective than l0EFT (0.0%) for development in vitro. Only in l0EFT treated group, immature oocytes have higher developmental capacity than matured ones, when they were frozen slowly and IVF after thawing. In experiment 2, oocytes were ultra-rapidly frozen using the electron microscope grid with two kind of cryoprotectants described above. In immature oocyte group, the cleavage rate was 13.9% and 5.8% of cleaved oocytes developed to over morula stage after IVF, and in matured group, 25.7 and 7.6%, respectively. There were no significant differences between two kind of cryoprotectants, but in ultra-rapid freezing using electron microscope grid, the efficiency is slightly higher in matured oocyte group.

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