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Analyses of soft tissue slices and immunohistochemical staining after 4 weeks of screw implantation: (A and B) soft tissue slices of H&E staining and Masson staining; (C) immunohistochemical staining of VEGF; (D) quantitative Tb. Ar around the screws; and (E) ratio of VEGF positive area to total bone area around the screws. Data were expressed as mean±SD. n = 7 in panels (D) and (E). *P < 0.05, ***P < 0.001
