- 积分
- 13286
- 威望
- 13286
- 包包
- 34831
|
本帖最后由 sunsong7 于 2010-12-30 21:37 编辑
, R5 g( C9 e+ I6 t* |
6 p, d- n6 V4 | J/ @补发图片:“新方法可预测干细胞分化过程”3 a% y' p- G+ U. \# x. V/ _3 W7 r9 j
; `9 \6 P e' O
3 M7 |5 E6 ]6 X. e1 k 这是细胞培养实验开始第二天的人体间叶细胞的干细胞免疫荧光图。图中,红色部分为“微柱”,绿色部分为细胞,蓝色部分为细胞核。这个细胞在后期分化为了骨细胞。(图片提供:Michael T. Yang (University of Pennsylvania))
7 |2 h( F) R2 Z$ E" Y s2 U) {( A$ }+ T* j; j5 w
7 l: ]* @# h: ?8 G6 C9 `0 R. t 这是人体间叶细胞的干细胞扫描电镜图。该细胞被放置在长度为13微米的长“微柱”上生长。在细胞培养实验第二天,细胞产生向心力,这可以从“微柱”的弯曲程度看出。这个细胞在后期分化为了脂肪细胞。(图片提供:Jianping Fu (University of Michigan))
# `$ _5 E) Z; u& Q, _
/ M6 x$ C9 m% ~* \" _1 Z. Y
2 N: ]0 Q: I# g* J 这是人体间叶细胞的干细胞被放置在短“微柱”上培养的扫描电镜图。细胞培养实验第二天,这些细胞开始伸展,其伸展程度和施加在“微柱”上的力均大于在长“微柱”培养的细胞。这些细胞在后期分化为了骨细胞。(图片提供:Jianping Fu (University of Michigan))
7 J y5 z: K/ ]3 w' J) J
! y L) ?( |! [+ l1 ^$ \0 PMicromolded elastomeric micropost arrays to engineer substrate rigidity.close5 t/ X$ a' F: q! b, q( L& X. {
(a) Graphical depiction of finite-element method (FEM) analysis of microposts of heights (L) each bending in response to applied horizontal traction force (F) of 20 nN. (b) Micropost deflection δ is plotted as a function of F, as calculated by FEM an…* x) L) @3 e4 u& z0 k' E# q
* k9 U; q# L/ m& ]0 @. y1 y: ^" F
3 {2 u( M6 n9 Y+ c4 t2 a Quantitative analysis of cell morphology, focal adhesions (FAs) and traction force during rigidity sensing
$ z7 H5 A9 D L+ J. G(a) Distributions of cell area for hMSCs plated on micropost arrays of different rigidities (high rigidity: L = 0.97 μm, K = 1,556 nN μm−1; medium rigiditiy: L = 6.1 μm, K = 18.16 nN μm−1; low rigidity: L = 12.9 μm, K = 1.90 nN μm−1). Gaussian functi… |
-
总评分: 威望 + 10
包包 + 20
查看全部评分
|