目的 探讨四倍体胚胎发育阶段对胚胎干细胞（ES）嵌合体小鼠制备的影响。

Objective To investigate the effects of developmental stages of tetraploid embryos on mouse chimeras from embryonic stem cells (ES).

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目的观察胚胎干细胞(ES细胞)囊胚腔注射的方法构建嵌合体小鼠自发性肿瘤。

Objective to study the spontaneous tumors derived in chimeric mice resulting from injection of embryonic stem (es) cells into host blastocysts.

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目的探讨分离小鼠囊胚内细胞群类胚胎干细胞及用于制作嵌合体小鼠的方法及应用价值。

Objective To explore techniques of isolating embryonic stem-like cells (ESLCs) from mouse blastocyst inner cell mass and the utilization of ESLCs to generate chimerical mice.

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