Fig. 4.

CD13⁺ pericytes rely on N-cadherin to attach to vascular endothelial cells. (A) Immunofluorescence staining showing the expression of CD31 (green), CD13 (red) and N-cadherin (blue) in the Sham, SCI group, AAV-5HRE-DPSCs (CON-DPSCs) group and AAV-5HRE-bFGF-DPSCs (bFGF-DPSCs) group. α1 and β1 represent the fitting of CD31 and N-cadherin. α2 and β2 represent the fitting of CD13 and N-cadherin. α3 and β3 represent the fitting of CD31, CD13 and N-cadherin (green becomes gray). Magnification: 40X; Scale: 50 μm. (B) The fluorescence intensity of CD13 in different groups. (C–D) The ratio of N-cadherin⁺ & CD13⁺ pericytes in CD13⁺ pericytes in α and β areas. (E) The coverage of CD13⁺ pericyte. * represents P < 0.05. ** represents P < 0.01. *** represents P < 0.001. n.s. represents no statistical significance. Data are represented as mean ± SD (n = 6). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)