Fig. 2

Correlation of plasma MeV-specific IgM OD values and circulating Tfh cells in MeV-infected patients. a Relationship of plasma MeV-specific IgM OD values and the percentage of CXCR5⁺CD4⁺ Tfh cells; b Relationship of plasma MeV-specific IgM OD values and the percentage of ICOS^high Tfh cells; c Relationship of plasma MeV-specific IgM OD values and the percentage of PD-1^high Tfh cells; d Different frequencies of CXCR5⁺CD4⁺ Tfh cells in the patients with negative (N) and positive (P) plasma MeV-specific IgM antibody results; e Different frequencies of ICOS^high Tfh cells in the patients with negative (N) and positive (P) plasma MeV-specific IgM antibody results; f Different frequencies of PD-1^high Tfh cells in the patients with negative (N) and positive (P) plasma MeV-specific IgM antibody results. ***, P < 0.0001; *, P < 0.05