본 연구는 마우스의 성숙 난자와 수정란의 유리화 동결을 위한 CPS, 기존 straw 및 OPS 방법의 효과에 대하여 비교하였다. 마우스 난자의 유리화 동결-응해 후 형태학적인 생존율을 조사한 결과, CPS (75%)와 기존 straw(72%)법이 OPS(68%)법에 비해 유의적으로 높은 생존율을 나타내었다(p<0.05). 과배란 처리 후 채란한 2-세포기 마우스 수정란을 유리화 동결-응해하여 일간 배양한 다음 수정란의 배 발달 상태를 비교한 결과, 동

This study was conducted to comparing on vitrification of mouse oocytes and embryos using CPS, conventional straws and CPS by evaluating in morphological survival for oocytes, and embryonic cleavages and blastocyst formation for embryos. The morphological survival in vitro after thawing of vitrified oocytes using CPS (75%) and conventional straws (72%) were significantly higher (p<0.05) than that using OPS (68%). The blastocyst formation rates of vitrified embryos using CPS (48.6%) and unfrozen control embryos (56.0%) were significantly higher (p<0.05) than those of conventional straws (43.4%) and OPS (37.7%). The rates of morula formation were also higher to control, CPS, conventional straws and OPS in orderly. These results show that CPS has the advantages of achieving a high survival and safety preservation.

• 석호봉(단국대학교 생명자원과학대학)