下列关于胚胎工程的各项叙述中正确的是 A.胚胎分割技术中分割胚胎时必需使用切割针或切割刀 b.胚胎干细胞的培养需要添加滋养层细胞其一般是 Template




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tomski下列关于胚胎工程的各项叙述中正确的是 a.胚胎分割技术中分割胚胎时必需使用切割针或切割刀 b.胚胎干细胞的培养需要添加滋养层细胞其一般是 coloring