请教一句英文的意思

懵懂干细胞

often maintenance of multipotency or* M  q$ [; o8 Z# m; E0 ^& o( X
pluripotency) J* J- x) l9 Y- k
什么叫often maintenace ？
4 L8 L  O- t1 Q% `望那位高手解惑，谢谢！

懵懂干细胞

Self-renewal is the process by which stem cells divide to make more
) v  ?2 d; H; ?; }3 o4 Jstem cells, perpetuating the stem cell pool throughout life. Self-renewal1 s5 M6 v+ C6 |+ S3 j: w+ d
is division with maintenance of the undifferentiated state. This re-
! m$ X) g3 O0 z" r$ Tquires cell cycle control and often maintenance of multipotency or
( c/ L1 A6 @! _3 Upluripotency, depending on the stem cell.
* o- d" U- X+ \7 `* n# T* r5 \麻烦帮忙看一下！谢谢了

懵懂干细胞

高明！谢谢！！！！

懵懂干细胞

高明！谢谢！！！！