For instance, some proteins related to atherosclerosis were down-regulated in SF, such as ARG2, CD14, CD44, engulfment, and cell motility protein 1 (ELMO1), neutrophil gelatinase-associated lipocalin (LCN2), MPO, S100A8, or S100A9 (Supplementary Table S3). Here, S100A9 is linked to atherosclerosis.