Bacteria, of course, don't have synapses or nerve cells.

细菌当然没有突触或神经细胞。

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This surface is called the cerebral cortex and is home to about 100 billion neurons, or nerve cells.

这层表面叫做大脑皮层，上面有大约1000亿个神经元，或神经细胞。

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But that didn't prove that the spinal cord neurons, or nerve cells, that harbored this gene were itch-specific.

但是这并未证明包含此基因的脊髓神经元或神经细胞是专门针对瘙痒的。

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Stem cells have the ability to grow other cells, such as heart, nerve or brain cells.

VOA: special.2010.06.15

Researchers hope to turn stem cells into specific cells, such as heart or liver or nerve cells.

CNN: NIH announces owners of stem cells

The scientific hurdles include the fact that there are as many neurons, or nerve cells, in the human brain about 100 billion as there are stars in the Milky Way.

WSJ: Obama Gives Details of Brain-Research Project

While some theories suggest that connections between neurons or nerve cells may be to blame for autism, it is unclear if stem cell therapy may help to restore such connections.

FORBES: Stem Cell Therapy To Treat Autism?