The generation and maintenance of circadian rhythm in mammalian is related to the periodcity of clock genes. In mammals, a master clock generating circadian rhythms is located in the suprachiasmatic nuclei (SCN) of the hypothalamus.
哺乳动物时钟节律的主要起搏点位于下丘脑视交叉上核(SCN)，它可以自主表达时钟基因。
参考来源 - 高血压大鼠心肌肾素—血管紧张素系统的日变化·2,447,543篇论文数据，部分数据来源于NoteExpress
The genes that control the body clock are most active in parts of the brain called the suprachiasmatic nuclei.
控制节律钟的基因在视交叉上核（大脑的某个部位）上表现得最为活跃，但是与其他基因一样，它们在几乎所有细胞中都存在。
The circadian rhythm in mammals is regulated by two clusters of nerve cells called the suprachiasmatic nuclei (SCN) in the anterior hypothalamus.
哺乳动物中调节昼夜节律的是两个调节神经细胞群，称为视交叉上核中的下丘脑。
For years, scientists thought that neurons in the brain's suprachiasmatic nuclei, or SCN, regulated our body clocks by firing a lot during the day and less at night.
很多年来，科学家们认为大脑的视交叉上核(scn)是生物钟中枢，具体机制是此处的神经元白天比夜间更兴奋。
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