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SARS-CoV-2 specific T-cell response 6 months after recovery. (A) Dot plots show the percentage of CD4+ and CD8+ T cells producing IFN-γ, TNF-α and IL-2 in response to a pool of overlapping peptides covering the immunodominant sequence domains of Spike protein. (B) Frequencies of mono- and multifunctional specific CD4+ and CD8+ T-cell responses.
