The mature embryo sac is surrounded by en lothelium tapetum. It is composed or an egg apparatus, one central cell with secondary nucleus, and 1—6 antipodal cells.
成熟胚囊被珠被绒毡县包围，由卵器、具次生核的中央细胞以及数目为1至6个反足细胞组成。
2
Then a reconstructed embryo was completed by the direct injection of the donor nucleus or cell without pulling out the injection pipette.
最后在不拔出注射针的情况下直接注射细胞核或完整细胞进而完成重构胚的构建。
3
At ellipsoidal embryo stage, the chromatin and nucleoli disappear and some cytoplasm enters the nucleus.