饮食限制看来会引起一项早已被植入所有生物基因的古老本能：在食物缺乏的时候，养分会被优先供给于组织维护，而非细胞增殖。
Dietary restriction seems to set off an ancient strategy written into all animal genomes, that when food is scarce resources should be switched to tissue maintenance from breeding.
吃某些食物实际上可以让癌细胞无法获得其生存所需的血液从而缺乏养分饿死。
Certain foods can actually starve cancer cells from getting the blood they need to survive.
人造骨骼缺乏形成天然骨骼的薄层软骨，并缺乏血液供应，因此一旦离开培养腔就会缺乏养分。
The replica bone lacks the thin layer of cartilage that lines the real bone, and it also lacks a blood supply, so it begins to starve as soon as it is removed from the culture chamber.
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