“…[ 9–15 ] As reported in previous studies, tissue injuries lead to site‐dependent environmental changes and abnormal cellular activity. Multiple factors, including enzymes, [ 16–36 ] reduction and oxidation (redox) reactions, [ 37–44 ] hypoxia, [ 32,45–49 ] pH, [ 47,50–54 ] temperature, [ 55–57 ] and the other characteristics, [ 42,58–60 ] become dysregulated at the onset of injury or during the progression of the healing ( Figure A). These hallmarks can be monitored to serve as a reference to evaluate the extent of injury, stage of wound healing, and necessity for treatment.…”