SOD2 and COVID-19: At the same time, compared to the group of patients who survived, significant changes in the activity of basic antioxidant enzymes, i.e., superoxide dismutases—cytosolic (Cu,Zn-SOD) and mitochondrial (Mn-SOD)—responsible for dismutation of superoxide anions in various cell compartments, were observed in the granulocytes of patients who died from COVID-19 (Figure 2).