突变是所有基因差异的最终原因,包括人类和香蕉，海星和伞菌之间差异。
Mutations are the ultimate cause of all the genetic differences, including the differences between a human and a banana, between a starfish and a toadstool.
H5N1在鸟类和其他动物之间来回传播获得突变而变得更容易感染哺乳动物也是可能的。
It is also possible that H5N1 has already passed back and forth between birds and other animals, picking up mutations and becoming better at infecting mammals.
研究团队观察到，发生SHANK3突变的神经细胞之间的沟通受损，他们还发现脑细胞和突触（神经细胞之间的接触点）的功能和结构的可塑性发生了变化。
The research team observed impaired communication between nerve cells in the mice with the SHANK3 mutation.
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