“The results show …·–/HO2 or H2O2 … papain , whereas when combined they act synergisti‐cally 2) nitroxide SOD mimics, but not SOD, exhibit a bell‐shaped dose‐response relationship … inactivation; 3) SOD, which at low dose inhibits superoxide‐induced oxidation of ferrocyanide, loses its antioxidative effect as its concentration increases.”