Cytokine profiling of NP-specific T cells from the convalescent subjects. T cells from convalescent subjects at 9–10 months post hospital discharge were expanded in the presence of MP-NP and then restimulated with MP-NP. The culture supernatants were analyzed by a Luminex assay. The experiment was done in duplicate. Data are presented as mean±SEM. MP-NP, NP peptide pool; c, convalescent subjects.