Fig. 6

a Immunofluorescence images of RAW264.7 macrophages co-cultured with different scaffolds. The nucleus, M2 macrophage and M1 macrophage staining for DAPI, CD206 and CD16/32, respectively. b, c Flow cytometry. d, e In vivo, macrophages expressed iNOS proteins in the control and CS groups, while macrophages expressed CD206 proteins in the CePO4/CS, and CePO4/CS/GO groups