生物体内高度分化的细胞还保留这分裂能力吗 ？答案是否定的，为什么？？

比如你的手指割破了，过一段时间愈合，这不就是细胞分裂的结果吗？
你可能错误理解为“生物体内高度分化的细胞还保留着无限分裂的能力吗”。

能常在繁殖下一代时细胞分裂,分化完的细胞没有繁殖能力了...

分画完的细胞也可以继续分裂啊

Multicellular organisms replace worn-out cells through cell division. In some animals, however, cell division eventually halts. In humans this occurs on average, after 52 divisions, known as the Hayflick limit. The cell is then referred to as senescent. Senescent cells deteriorate and die, causing the body to age. Cells stop dividing because the telomeres, protective bits of DNA on the end of a chromosome, become shorter with each division and eventually can no longer protect the chromosome. Cancer cells, on the other hand, are immortal. An enzyme called telomerase, present in large quantites in cancerous cells, rebuilds the telomeres, allowing division to continue indefinitely.

因为答案错了