结论：孕酮对离体胎鼠头盖骨成骨细胞的分化具有多重促进效果，但对细胞的增殖无影响。

Conclusion: Progesterone has a multi stimulating effect on the differentiation of fetal rat calvarial osteoblast, but no effect on cell proliferation.

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方法胎鼠头盖骨成骨细胞在含有不同浓度孕酮的培养基中培养约20天。

Methods Fetal rat calvarial osteoblasts were cultured in the medium with different concentrations of progesterone for nearly 20 days.

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