FMO5 and COVID-19: The results show that there are 7 clusters: the pink cluster (histone, ROS, NADPH oxidase oxide, etc.), purple cluster (DNase, virulence factor, neutrophils, etc.), orange cluster (TLR, dendritic cell, phagocytosis, etc.), blue cluster (COVID-19, cytokine storm, fibrosis, etc.), green cluster (bacteria, DNA, necrosis, etc.), yellow cluster [autophagy, cell-free DNA, cell death, etc.)], and red cluster (venous thrombosis, lupus nephritis, extracellular DNA, etc.).