Fig. 7

SEM images of scaffold structure over time immersed in PBS and lysozyme. MMW represents scaffold of only chitosan medium molecular weight, M0 scaffold of chitosan/hydroxyapatite without heparin, and M5 scaffold of chitosan/hydroxyapatite and 5 mg/mL loading concentration of heparin. T0 before immersion, T2 after 7 days of immersion, T3 after 14 days of immersion, and T4 after 21 days of immersion. All scale bars are 100 μm