目的研究人早期胚胎分割后单个卵裂球的继续发育与分化，探讨人早期胚胎卵裂球的全能性。

Objective: to investigate the development and differentiation of blastomeres isolated from early human embryos, and study the totipotency of blastomeres.

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背景：人胚胎干细胞传代培养的关键是抑制其自发分化、保证细胞的全能性。

BACKGROUND: Key point for subculture of human embryonic stem cells is to inhibit spontaneous differentiation and make sure totipotency of cells.

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胚胎分割是研究细胞分化、早期胚胎发育、胚胎细胞全能性的有力手段。

Embryo bisection is a powerful means in the study of cell differentiation, early embryonic development and the totipotency of embryo cell.

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