In plasmacytoid dendritic cells (CD123+CD303+ pDC; Supplementary Figure S14), CD15 increases were comparatively subtle (Supplementary Figure S14I, p = 0.0432); CD56 did not differ (p = 0.0774) and pDC changes in RA were otherwise largely confined to increased CCR7 (Supplementary Figure S14D, p = 0.0337) and a low-level expression of CD275 (Supplementary Figure S14U, p = 0.0220). The gene discussed is ICOSLG; the disease is rheumatoid arthritis.