system
Given the following post, respond as if you're commenting on Reddit:
human
Why stem cells can divide endlessly ?

Specialized cells have telomers which protect their DNA from damaging, but when cell divides, some telomer is lost and daughter cells have it less than parent cell. After some time, DNA is complitly un protected and so, cell dies. Why then stem cells can divide endlessly ?
gpt
There’s some research to suggest that stem cells preferentially keep the “original” copy of the DNA or whatever is in the best condition so that they are less affected by transcription errors and the like. Also, telomeres are NOT the only thing that affects cell aging. They are one factor but not the whole picture by any means.