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胚胎干（Embryonic stem，ES）细胞是由着床前胚胎内细胞团（Inner cell mass，ICM）或原始生殖细胞（Primordial germ cells，PGC）经体外分离培养而建立的克隆细胞系。ES细胞的特点是只生长、不分化，并保持早期胚胎发育的多能性。本文比较了人囊胚在G２．２培养液和含DMEM培
Embryonic stem (ES) cells are clonal cell lines that have been isolated and cultured in vitro by preimplantation embryo inner cell mass (ICM) or primordial germ cells (PGCs). ES cells are characterized by growth, undifferentiation, and the pluripotency of early embryonic development. This article compared human blastocysts in G2.2 medium with DMEM culture