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来源:雅诚德英语网
It is caused by a disturbance in a group of cells in embryos called neural crest cells.
这种病是因为一群叫做神经嵴细胞的胚胎细胞出现扰乱所引起的。
It is caused by a disturbance in a group of cells in embryos called neural crest cells.
这种病是因为一群叫做神经嵴细胞的胚胎细胞出现扰乱所引起的。