在发育完成的组织中 表达其特征基因、没有继续分裂能力、
因为端粒保护染色体末端，阻止细胞分裂。
Because telomeres protect the ends of chromosomes to stop cells dividing.
用脱氧核糖核酸末端转移酶介导的缺口末端标记技术（TUNEL）检测细胞凋亡。
Terminal deoxynucleotidyl transferase-mediated nick end labeling (TUNEL) technique were applied to deterimine the apoptotic cells.
我在我的实验室里已经发现，人的心理压力确实会加快细胞的老化，这从染色体末端即端粒的损耗程度上可以看出来。
A. In my lab, we’re finding that psychological stress actually ages cells, which can be seen when you measure the wearing down of the tips of the chromosomes, those telomeres.
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