有些人有两种“长的”启动基因(一个是从一位双亲中遗传而来)，启动基因是一种减少神经元连接处的血清胺数量的组合体。
Some people had two "long" versions of the promoter gene (one inherited from each parent), a combination that reduces the amount of serotonin in the junctions between nerve cells.
血清胺是在神经元之间传递信号的信使分子，人们已经知道它调解着人类行为的很多方面，尽管细节是复杂而有争议的。
Serotonin is a messenger molecule that carries signals between nerve cells, and it is known to modulate many aspects of human behaviour, although the details are complex and controversial.
血清胺是在神经元之间传递信号的信使分子，人们已经知道它调解着人类行为的很多方面，尽管细节是复杂而有争议的。
Serotonin is a messenger molecule that carries signals between nerve cells, and it is known to modulate many aspects of human behaviour, although the details are complex and controversial.
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