Fig. 3

a Representative histological images of the repaired area using H&E, Masson’s trichrome, and Alcian blue staining at 4 and 12 weeks after operation. b The saline group contained representative inflammatory cells, including plasma cells (Pc), lymphocyte (Lc), polymorphonuclear neutrophils (PMN), basophil (Bp), eosinophil (Ep) and Macrophage (M), in the reparative regions at 4 weeks