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为何哺乳动物的肝脏比其他衰老得更快?Cell新研究揭秘非编码DNA损伤 ...
我们的器官和组织并非以相同的速度衰老。衰老的标志是衰老细胞,即无法分裂并丧失功能的细胞的增加,对肝脏或肾脏的影响比对皮肤或肠道的影响更快。科学界对导致这一过程的机制争论不休。虽然人们普遍认为,随着年龄增长而累积的遗传物质(DNA)损伤是衰老的根源,但 ...
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