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Longitudinal binding of serum IgA to SF162 gp140ΔV2 (A), week 38 nasal IgG binding to SF162 gp140ΔV2 (B), and correlation between levels of serum and nasal IgG binding to SF162 gp140ΔV2 at week 38 (C). MFI binding values shown for IgA binding are for a 1:80 serum dilution. Binding specificities for nasal samples were normalized to the total IgG concentration in each sample. Green arrows indicate times of immunization. *, FDR_P < 0.05.
