Self-renewal is the process by which stem cells divide to make more # Y0 b) M" N& J9 O! y3 Z5 ostem cells, perpetuating the stem cell pool throughout life. Self-renewal ( R$ x) u2 [) e! C4 Tis division with maintenance of the undifferentiated state. This re- # l' Z0 w. L0 T: Y, H6 j5 B( D. Hquires cell cycle control and often maintenance of multipotency or 1 I* X& {( d1 q( x) upluripotency, depending on the stem cell.! ^/ J. ]4 i9 C7 o1 F$ S+ ~
麻烦帮忙看一下！谢谢了作者: tpwang 时间: 2011-3-18 21:26
回复 懵懂干细胞 的帖子 * `$ P; \2 q3 Q( R& y! Q' s: V0 @9 h, j- A/ ~) a( c; Y5 H
This requires cell cycle control and often maintenance of multipotency or pluripotency, depending on the stem cell.5 O3 m( M3 W! `$ n: U: F' P; O
$ B1 L9 `4 D7 ^4 L, @8 p, Y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）。/ ~5 D7 k% i3 V' `9 z$ y/ j% s; a
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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。 2 M5 x2 Y h) k5 c& H# k3 D; [4 G& I3 y5 F' ^: e
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： % D# N, F" |: H+ m0 |" g2 O: q# |; k% e6 |2 r0 E8 E. H0 M# d
This requires cell cycle contro, and often requires maintenance of multipotency or pluripotency (which depends on the stem cell types).作者: 懵懂干细胞 时间: 2011-3-18 21:34