suprachiasmatic

视交叉上的

The genes that control the body clock are most active in parts of the brain called the suprachiasmatic nucleus的复数形式）" target="_blank">nuclei. 控制生物钟的基因在脑部的视交叉上核的细胞内最为活跃。

Initial theories suggested a pathway from the retina to the suprachiasmatic nucleus. 初步理论表明视网膜至视交叉上核间有一通道。