Fig. 2
H&E and Masson staining. A H&E staining (The boxed area in field NR at a magnification of 200 × is highlighted in field NR’. The boxed area in field IM is highlighted in field IM’); B Masson staining (The boxed area in field CI at a magnification of 200 × is highlighted in field CI’); C Quantitative analysis of the total number of cells (The values are the mean ± standard deviation); D Quantitative analysis of the percentage of collagen deposition (blue area) (The values are the mean ± standard deviation). a P < 0.05 versus the C group, b P < 0.05 versus the IM group, c P < 0.05 versus the NR group, d P < 0.05 versus the EI group. C Control group, IM Immobilization model group, NR Natural recovery group, EI Extracorporeal shock wave intervention group, CI Extracorporeal shock wave combined with A2AR antagonist SCH 58261 intervention. The Arrow: the inflammatory cell