(1)). In contrast, ASA likely induced side reactions, regenerating other oxidative species (e.g., Cl2), which remaining as oxidative substances and result in a lower apparent scavenging efficiency. These results suggested that MPO hydrogels hold promise as a first-aid treatment for oxidant-induced chemical burns.(Eq. 1)NaClO + H2O2 → NaCl + H2O + O2. This evidence concerns the gene MPO and burn.