Fig. 6From: Reprogrammed mesenchymal stem cells derived from iPSCs promote bone repair in steroid-associated osteonecrosis of the femoral headAngiogenesis in the femoral head. a Immunohistochemical analysis of the expression of VEGF and CD3. b Microvessel density (MVD) was calculated following IHC staining by counting single endothelial cells or clusters of endothelial cells. Data are presented as mean ± SEM. Statistical differences were calculated using unpaired t-test (**p < 0.01; ***p < 0.001; ****p < 0.0001). Scale bar indicated 50 μmBack to article page