Tongue mucosal wound healing. The debridement procedure of collagen scaffold and collagen/RSV scaffold covering the rat tongue (A‐C). Both the collagen scaffold (D‐F) and collagen/RSV scaffold (G‐I) showed good coverage of the underside of the tongue defect (D, G) 3 days, (E, H) 7 days, (F, I) 14 days after surgery. (Sample number: 5 of each group)