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.
胚胎干细胞是来源于附植前胚胎的内细胞团或附植后胎儿的原始生殖细胞具有发育全能性的细胞。
Embryonic stem cell is a kind of undifferentiated pluripotent stem cell, which stems from pr Eimplantation ICM or early fetus primordial germ cell.
脂肪干细胞是已知的多能干细胞，它们能产生多种细胞、组织类型，但是他们不如胚胎干细胞全能性。
The stem cells found in fat are known as multipotent stem cells. They can produce a variety of cell and tissue types, but are not as flexible as embryonic stem cells.
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