4.
Microcapillary-like structure formation on CPC scaffolds. (A) Cumulative length of microcapillary-like structures on CPC scaffolds. Bars with dissimilar letters indicate significantly different values (p < 0.05). The cumulative microcapillary lengths in images such as Fig. 3 were measured and divided by image area to yield the data in Fig. 4A (mean ± sd; n = 5). (B, C) Representative SEM images of microcapillary-like structures. These images show examples of microcapillary structures on CPC-RGD at 14 d. Image C is a higher magnification of the square area in image B.