Fig. 3: Overall detection of SARS-CoV-2-specific T cell responses by ICS.
From: Robust SARS-CoV-2-specific T cell immunity is maintained at 6 months following primary infection

a, Proportion of donors (n = 100) with a detectable IFN-γ and/or IL-2 response by ICS for CD4+ T cells and CD8+ T cells against spike and nonspike proteins 6 months following primary infection. b, Aggregated IFN-γ and IL-2 ICS responses for CD4+ and CD8+ T cells against spike and nonspike proteins (n = 100). The significance was determined using Wilcoxon matched-pairs signed-rank test (two-sided), ****P < 0.0001. Error bars represent s.e.m. ICS, intracellular cytokine staining.