A virus was used to introduce the genes to mouse embryo skin cells, which were then monitored.
他们用一种病毒来把这些基因引入老鼠胚胎的皮肤细胞，然后进行监测。
METHODS: cranial neural tubes were dissected from 8.5 day mouse embryo using trypsin digestion and explanted in culture dishes. Cells dissociated from the neural tubes were cranial neural crest cells.
方法：采用胰酶消化法分离小鼠胚胎第8 . 5天的颅神经管，从小鼠颅神经管中游离出来的细胞即为颅神经嵴细胞。
Thus, we can obtain the ES mouse completely from ES cells with the method of tetraploid embryo complementation.
利用四倍体胚胎补偿技术就可以得到完全由ES细胞发育而来的小鼠。
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