One group of classical monocytes (CD14++/CD16−) and MC10 (CD16−CD25+CD127−HLA-DR−) were higher in RA, SSc, and SLE than in HCs (HCs: 3.977%; RA: 8.902%; SSc: 9.207%; SLE: 9.176%) (Figure 13B). Here, CD14 is linked to systemic sclerosis.