Overall, dynamics of the three cTFH cell subpopulations (cTFH1 [CD3+CD4+CXCR5+CXCR3+CCR6−], cTFH2 [CD3+CD4+CXCR5+CXCR3−CCR6−], and cTFH17 [CD3+CD4+CXCR5+CXCR3−CCR6+]) differed after influenza vaccination (Figure 2C–E and Figure S4C–E). Here, CCR6 is linked to influenza.