Embryonic stem cells (ESC) are pluripotent cells derived from the inner cell mass (ICM) of pre-implantation mouse embryos or primordial germ cells (PGC) of embryos.

• 胚胎干细胞(embryonic stem cells,ESC)是从植入前的胚胎内细胞团(Innermass cells,ICM)或原始生殖细胞(Primordial germ cells,PGCs)分离和克隆的具有多潜能性细胞。