除了低克隆率-只有1.7%的胚胎能存活到最后阶段-创造转基因狗还有一个挑战即如何控制外部基因在核d NA中的植入位置。
Besides the low efficiency of cloning - just 1.7 per cent of embryos came to term - another challenge to creating transgenic dogs is controlling where in the nuclear DNA a foreign gene lands.
采用含碱性成纤维细胞生长因子和表皮生长因子培养基先后作用培养的方法形成神经干细胞克隆率最高(0.630%)。
Clone rate of neural stem cells was the highest (0.630%) using ordinal culture of basic fibroblast growth factor and epidermal growth factor.
采用含碱性成纤维细胞生长因子和表皮生长因子培养基先后作用培养的方法形成神经干细胞克隆率最高(0.630%)。
Clone rate of neural stem cells was the highest (0.630%) using ordinal culture of basic fibroblast growth factor and epidermal growth factor.
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