请下列译文,

kqyy

We performed three additional experiments using CD271
8 i( u$ D1 Y: C( Xfor enrichment of MSC. Upon isolation of MNC by Ficoll
' @7 N3 b. q5 O3 j' y2 k/ jdensity fractionation, half of the sample was processed0 v. s* d% w" D. O" J# l
further using the CD271 MicroBead Kit. About 5% of the cells were in the positive fraction and about 50% of these1 M& N" T& I0 F* ?& L" ?
were CD271
, as determined by flow cytometry. CFU-F" C1 U; |9 ^' f
were exclusively found in the CD271
fraction, as
1 W* i, H% x- e7 j- _+ Z7 \0 s! O7 Rdescribed elsewhere [22]. The number of CFU-F per
- O+ [$ g% I/ K. f' A. h$ bcell was 210 times higher in CD271
cells in comparison1 Z8 J6 D& r1 J7 a  Z
with MNC. Hence MSC were enriched in the CD271

. j7 \2 I4 M7 E3 e, Cfraction, although the yield of CFU-F per milliliter BM4 P- f% T* N7 V0 h: Z7 J$ e
aspirate or with regard to the number of MNC was greatly+ d1 {/ a" u8 _- G& P% p
reduced.

oldmac7

我来试试看:
; a2 S6 E7 y' S, [) I0 `  H( {9 l/ @! U7 u; h4 Y
我们进行了三次另外的的试验, 使用CD271来丰富间充质干细胞。经用Ficoll密度分馏来隔离间充质干细胞后，对当中一半的样本使用CD271微珠子包 (MicroBead Kit) 来作进一步处理。约5％的细胞是在阳性的部分，而经流式细胞仪检测后, 当中大约有50％是CD271。 CFU – F往往是被发现只存在CD271的部分里，正如在其他地方所描述一样[22]。与CD271细胞在间充质干细胞的数量来比, 每细胞里的CFU-F数量 是比它高210倍的。因此，虽然每毫升骨髓抽出(BM aspirate) 或间充质干细胞的CFU-F产出量大大减少了，间充质干细胞在CD271 的部分是被丰富了的。