请教一句英文的意思

懵懂干细胞

often maintenance of multipotency or# I1 @. P* E+ I1 E1 y+ j
pluripotency
) E2 d" J$ a+ W什么叫often maintenace ？8 z; J) j) d1 p) P. w3 w
望那位高手解惑，谢谢！

懵懂干细胞

高明！谢谢！！！！

懵懂干细胞

高明！谢谢！！！！

tpwang

回复 懵懂干细胞 的帖子
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This requires cell cycle control and often maintenance of multipotency or pluripotency, depending on the stem cell.0 n* I4 S; r8 w3 V; S$ Z5 |1 p

: Z- G4 T* @1 Q: @2 s9 y7 k这一(自我更新)过程（的实现）要有对细胞周期的控制，并常涉及多能性的维持（mutipotency or pluripotency，根据不同的干细胞而定）。  y  s4 W3 c$ s+ ?' j; d
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cell cycle control和maintenance of都是requires的宾语，often是用来修饰maintence的，意思是“往往”也需要（在自我更新过程中）维持多能性。% a% M6 z4 C6 B4 h4 D% g
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先把句型结构搞清楚了，理解就容易些了。这是个带两个并列宾语的结构。完全展开的话就是：3 j* f0 C  o3 M% L

4 `+ o/ v% Q' p5 r, p0 I  KThis requires cell cycle contro, and often requires maintenance of multipotency or pluripotency (which depends on the stem cell types).

懵懂干细胞

Self-renewal is the process by which stem cells divide to make more. r; c! x. C) x( Q* N6 x
stem cells, perpetuating the stem cell pool throughout life. Self-renewal
' l2 j1 P" A  c) ^is division with maintenance of the undifferentiated state. This re-
; S; i6 r; ~  I$ b9 _# b7 zquires cell cycle control and often maintenance of multipotency or/ }' V9 C* r7 r! ^$ v
pluripotency, depending on the stem cell.* P" \+ E4 d' D! L2 x! Y: h
麻烦帮忙看一下！谢谢了

tpwang

回复 懵懂干细胞 的帖子( y$ B  r2 P  T0 G5 r' w
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把上下文一起贴出来，贴一个“段落”或起码一个句子。