Fig. 7. Evaluation of the angiogenic properties of GelMA–dHAP in the chick chorioallantoic membrane (CAM) assay. (A) Micrograph stereoscopy images of the control, GelMA and GelMA–dHAP groups taken on day 8 of embryonic development. (B) The change in total angiogenesis area of control, GelMA and GelMA–dHAP group calculated from stereoscopy images (*P < 0.05). Scale bars: 0.5 mm. (C) Representative images from each group demonstrating almost no inflammation in the CAM of the GelMA–dHAP group, whereas a mild inflammatory response, together with infiltration of inflammatory cells around the blood vessels, was observed consistently in the control group and GelMA group. Scale bars: 100 μm. The solid triangles indicate the presence of inflammatory cells in the blood vessels, and the hollow triangles indicate no inflammatory cell infiltration in blood vessels or less inflammatory cells.