ICOSLG and rheumatoid arthritis: Intermediate monocytes (Supplementary Figure S16) showed higher CD275 (p = 0.0255; Figure 3A) and CD163 (p = 0.0212; Figure 3B) and had a much higher CD15 in RA (RA: 31.4K vs. HC: 1,497; p = 0.0157; Figure 3C).