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. 2022 Jan 31;603(7901):493–496. doi: 10.1038/s41586-022-04465-y

Extended Data Fig. 6. Cellular immune responses to Omicron by intracellular cytokine staining assays.

Extended Data Fig. 6

Spike-specific IFN-γ, TNF-α, and IL-2 CD8+ and CD4+ T cell responses by intracellular cytokine staining assays at month 8 following final vaccination with Ad26.COV2.S (N = 20). Responses were measured against the SARS-CoV-2 WA1/2020, B.1.617.2 (Delta), and B.1.1.529 (Omicron) variants. Medians (red bars) are depicted and numerically shown.