目的：系统的研究小鼠胚胎干细胞的提取、体外培养扩增和向成骨细胞定向诱导分化。
Objective: research systematically into the isolation, culture and direct differentiation to osteoblast of embryonic stem cells.
目的：系统的研究小鼠胚胎干细胞的提取、体外培养扩增和向成骨细胞定向诱导分化。
Objective: research systematically into the isolation, culture and direct differentiation to osteoblast of embryonic stem cells.
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