结论通过卵细胞第一极体形态可预测受精卵及卵裂期胚胎质量。
Conclusion Zygotes and embryo quality can be predicted by morphology of the first polar body.
结果表明海狸鼠卵母细胞与其它啮齿动物的卵母细胞一样，能够在体外培养成熟，完成第一次减数分裂，排出第一极体。
The results indicated that nutria oocytes, like other rodent oocytes, can be matured in vitro, complete first meiotic division and discharge first polar body.
目的探讨卵细胞第一极体形态与原核期受精卵形态、卵裂期胚胎质量的关系。
Objective To investigate the relationship between the first polar body morphology of oocyte and the zygote morphology in pronucleus stage, embryo quality in cleavage stage.
卵丘-卵母细胞复合物各组的卵母细胞生殖泡破裂发生率和第一极体排除率明显高于裸卵各组（P<0.05）。
Percentage of undergoing germinal vesical breakdown and PB1 extrusion in cumulus-oocyte complex groups was higher than that in denuded oocyte groups(P<0.05).
卵丘-卵母细胞复合物各组的卵母细胞生殖泡破裂发生率和第一极体排除率明显高于裸卵各组（P<0.05）。
Percentage of undergoing germinal vesical breakdown and PB1 extrusion in cumulus-oocyte complex groups was higher than that in denuded oocyte groups(P<0.05).
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