Figure 2

In vitro degradation of the CM-ALs scaffolds with different CH/nHA-AL contents during the 12 weeks of observation. (A) Morphological changes of the scaffolds observed under SEM; (B) pH value of degradation medium from the prepared scaffolds with the increasing incubation time; (C) Mass loss of the scaffolds during the degradation period. White arrow indicates CH/nHA-AL microsphers. *p < 0.05, **p < 0.01, ***p < 0.001 vs CM-ALs (0%) or CM-ALs (10%) scaffolds.