cDC2 cell purity and supplementary phenotype analysis. (A) Gating strategy to determine cDC2 purity after isolation from PBMCs. cDC2s were stained for CD1c, CD11c, CD14, and CD20. A first gate is set based on the physical FCS-A/SSC-A parameters followed by selecting on negative cells for CD14 and CD19. cDC2s are then identified as positive cells for CD11c and CD1c. (B) Surface galectin-9 and CCR7 expression in galectin-9 and CCR7-positive cDC2s. Graph shows average ± SEM gMFI of five individual donors. One-way ANOVA followed by Dunnett’s test for multiple comparisons was performed. *P < 0.05; **P < 0.01; ***P < 0.001. gMFI, geometric mean fluorescence intensity.