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Specific T-cell responses measured by ELISpot
The number of specific T cells with secretion of IFNγ at days 0 and 28 in all participants (A), and stratified by pre-existing adenovirus type-5 neutralising antibody titres of less than or equal to 1:200 (B) and more than 1:200 (C). vp=viral particles. IFN=interferon. PBMC=peripheral blood mononuclear cell.
