Fig. 3From: Elevated expansion of follicular helper T cells in peripheral blood from children with acute measles infectionCorrelations of cytokine levels and Tfh cells in the patients with MeV infection. a, b Levels of plasma IL-21 and IL-6 in the patients with MeV infection; c, d, e Relationships of plasma IL-21 concentrations with the frequencies of Tfh, ICOShigh Tfh and PD-1high Tfh cells in MeV-infected patients, respectively; f Relationship of plasma IL-21 levels and the OD values of plasma MeV-specific IgM antibodies. ***, P < 0.0001; **, P < 0.01Back to article page