初步理论表明视网膜至视交叉上核间有一通道。
Initial theories suggested a pathway from the retina to the suprachiasmatic nucleus.
生物钟被认为是叫做视交叉上核的神经细胞的聚集。
The biological clock itself is believed to be a cluster of nerve cells called the suprachiasmatic nucleus.
更重要的是，这些区域包括掌管生物钟的视交叉上核。
More important, these regions included the suprachiasmatic area, which is home to the body's circadian clock.
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