ADSCs+RADA16-RGD transplantation increases the number of NF200+ nerve fibers at the injury center. (A) At 8 weeks of transplantation of ADSCs+RADA16-RGD, NF200 antibody staining (red) was performed via passing through the central sagittal section of the spinal cord injury. The panels below (A) show high magnification of boxed regions in the top panels. (B) Quantitative analysis of NF200+ nerve fibers at the injury center. The ADSCs+RADA16-RGD group was significantly higher than the PBS, ADSCs, and RADA16-RGD groups (ADSCs+RADA16-RGD vs. PBS, ADSCs, or RADA16-RGD: p < 0.05). * p < 0.05. Data are presented as mean ± SEM (n = 3 per group). Scale bar = 200 µm. ADSCs: adipose stem cells; NF200: neurofilament 200; DAPI: 4′6-diamidino-2-phenylindole. NF200 (red): Alexa Fluor 647.