Fig. 9

A, B H&E staining images of three groups (scale bar: Figure A = 50 µm, Figure B = 100 µm, NB: new bone, HB: host bone, FT: fibrous tissue, S: scaffolds). C New bone areas were calculated by Image-Pro Plus 6.0 software. The data are expressed as the mean ± SD. *p < 0.05 and **p < 0.01, comparison with the blank group; ^#p < 0.05, comparison between the Co0 and Co2.5 groups. D, E Masson’s trichrome staining images (scale bar: Figure D = 50 µm, Figure E = 100 µm)