我们观察描述鳄蜥的胚前发育：精巢和卵巢的形态特征；
We observed and described the feature of testis and ovary ;
小鼠体细胞核移植重构胚的着床前发育情况。
Preimplantation development of reconstructed embryos by nuclear transfer was studied .
胚前发育胚前发育胚前发育