Does ‘Immortal DNA strand＇ exist in ‘immortal＇ stem cells？

Stem cells function to generate differentiated cells, and, at the same time, are maintained as ‘immortal＇ cells through self-renewal. Accumulated evidence indicates that adult stem cells may be the most common precursor for cancers in adult mammalian tissue , and this concept is gaining increasing support . Meanwhile, this also raises the question of how stem cells, which have a much longer lifespan compared to other progenitor and mature cells, can avoid accumulating mutations from DNA replication errors, thereby reducing the risk of tumorigenesis.第一段]