1.基本概念 干细胞:具无限自我更新和多向分化潜能的细胞 Stem cell Stem cell Self-renewal Differentiation (copying) (specializing) Identical stem cells Specialized cells1. 基本概念 干细胞：具无限自我更新和多向分化潜能的细胞 Identical stem cells Stem cell Self-renewal (copying) Stem cell Specialized cells Differentiation (specializing)