目的：研究小鼠受精卵冷冻解冻后的发育效果。
Objective: To study the preservation and development of mouse zygotes after being frozen and thawed.
另外有一组第一个品种的未改变的受精卵，作为参照组。
A group of the first strain, left unmodified, was employed as a control.
生命在受精卵的时候就已经开始分雄雌了(剩下的我就不是很清楚了)。
The life begins with gender upon fertilization. But I am afraid that is...
生命在受精卵的时候就已经开始分雄雌了(剩下的我就不是很清楚了)。
The life begins with gender upon fertilization. But I am afraid that is...
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