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. 2020 May 22;395(10240):1845–1854. doi: 10.1016/S0140-6736(20)31208-3

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Specific T-cell response measured by ELISpot

(A) The number of specific T cells with secretion of IFNγ at days 0, 14, and 28 in all participants, and stratified by pre-existing Ad5 neutralising antibody titres. (B) The proportion of positive ELISpot responders at days 14 and 28 post-vaccination in all participants, and stratified by pre-existing Ad5 neutralising antibody titres. IFN=interferon. PBMCs=peripheral blood mononuclear cells. Ad5=adenovirus type-5. ELISpot=enzyme-linked immunospot.