正确答案: A
胚胎移植技术
题目:老年痴呆症患者的脑血管中有一种特殊的β一淀粉样蛋白体,它的逐渐积累可能导致神经元损伤和免疫功能下降.某些基因的突变会导致β一淀粉样蛋白体的产生和积累。下列技术不能用于老年痴呆症治疗的是
解析:A
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举一反三的答案和解析:
[单选题]----It looks heavy. Can I give you a hand?----_______.
No, thanksB. Yes, my pleasure
[单选题]Either you or one of your students ______ to attend the meeting that is due tomorrow.
is
[单选题]杯状花序属特化的( )。
聚伞花序