Fig. 6.

Adhesion of mBMSCs, HUVECs and NIH3T3 to Glass, PC/Fe-MPNs, and PC/Fe@c(RGDfc) coated substrates. (a) Fluorescence microscopy images of cells seeded on different surfaces for 2 and 4 h. (b) Cell number per square micrometer of the seeded cells. (c) Schematic representation of the cell-substrate adhesion ability assay after cell spreading. (d) Cell-substrate adhesion ability of cells seeded on different surfaces for 8 h. (e) Cell morphology after attachment of cells to different substrates. Scale bars in (a) are 50 μm, and in (e) are 40um. N = 3, no significance noted as "ns," *p < 0.05, **p < 0.01, ***p < 0.001, and ^#p < 0.05, ^##p < 0.01 or ^###p < 0.001 compared with the Control group, using t-test.