The "gut brain, " formally known as the enteric nervous system, is made up of some 500 million nerve cells, as many as there are in a cat's brain.

肠脑，作为真正意义上的肠道神经系统，大约由5亿神经细胞构成，这和猫的大脑的神经细胞数目相当。

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The "gut brain, " formally known as the enteric nervous system, is made up of some 500 million nerve cells, as many as there are in a cat's brain.

肠脑，作为真正意义上的肠道神经系统，大约由5亿神经细胞构成，这和猫的大脑的神经细胞数目相当。

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