They help control practically every bodily process, including cell growth, hormone secretion and light perception.

它们参与控制几乎所有的人体过程，包括细胞生长，激素分泌，与光感受。

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They help control practically every bodily process, including cell growth, hormone secretion and light perception.

它们参与控制几乎所有的人体过程，包括细胞生长，激素分泌，与光感受。

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