Time also gradually shortens the telomeres that act as protective caps for our DNA-containing chromosomes.

时间也会逐渐缩短端粒的长度，端粒是我们DNA染色体的保护帽。

In contrast, his brother's telomeres remained relatively stable.

相比之下，他兄弟的端粒保持相对稳定。

The most hostile men were 30% more likely to have short telomeres.

最具敌意的男性端粒短的可能性要高出 30%。

That's why Bailey figured that Scott's telomeres would shorten during his year in space.

这也是为什么贝利认为斯科特的端粒在太空中的一年里会缩短。

When telomeres become too short, a cell can no longer divide and it dies.

当染色体终端太短时，细胞也就无法再分裂了，这意味着一个细胞的死亡。

In humans and other species, telomere length has been shown to shorten with age.

在人类和其他物种中，端粒长度已被证明随着年龄的增长而缩短。

Telomeres are protective caps on the end of our chromosomes which shorten over time.

端粒是染色体末端的保护帽，随着时间的推移会缩短。

So, telomeres are directly related to aging and length of life.

所以端粒与年龄增长和寿命长短有直接关系。

These caps, called telomeres, are one line of defense against aging in many species.

这些连接键叫做端粒体，就是它们帮助这些生物抵抗衰老。

But Bailey says longer telomeres are more likely yet another signal of stress or even injury.

但是贝利说，变长的端粒更可能是外力压迫或损伤的另一种信号。

Eventually, the telomeres run out, at which point the cell stops duplicating and dies.

最终，在细胞停止复制并死亡时，这些端粒也会消失。

Preliminary tests found Scott's telomeres significantly increased in average length while in orbit, but shortened within 48 hours after landing.

初步测试发现，在轨道上，斯科特的端粒平均长度显著增加，但在着陆后的48小时内缩短了。

And it turns out, stress may actually accelerate the shortening of these telomeres.

而实际上，压力会加速这些端粒变短。

Telomeres are like the plastic tips at the ends of shoelaces that keep the fabric from coming apart.

端粒就像鞋带末端的塑料尖头，防止织物散开。

Bailey was part of a group that also looked at structures in the twins' cells called telomeres.

贝利所在的小组也观察了双胞胎细胞中的端粒结构。

We'd also expect to find telomeres, the ends of each original chromosome, stuck head to head in the middle.

我们还想找到端粒，就是每个原始染色体在中间头对头连接的末端部分。

From what researchers could tell, Scott's telomeres weren't shorter in space.

从研究人员的报告中得出，斯科特的端粒在太空中并未变短。

Normally that doesn't matter, since these lost bits come from the telomere end caps that don't encode important information.

因为丧失的基因信息源自端粒体末端连接键，不包含重要信息。

Your telomeres are listening to you.

你的端粒在听你说话。

Animal chromosomes end with a DNA sequence called a telomere.

动物染色体以称为端粒的 DNA 序列结束。