Table 1 presented the rates of cell subtypes in PB. As shown in Figures 4(a) and 4(b), the high-level expression of RANK on CD14+ cells was correlated with that of CCR6. As presented in Table 1, the rates of RANKhigh on monocytes, CCR6+ on monocyte, and CCR6+ on RANK (–) monocytes in RA patients were significantly higher in HV, respectively. Here, CCR6 is linked to rheumatoid arthritis.