Antiviral immune reconstitution after iC9-T-cell infusion. Patients 7 (A-B), 3 (C-D), 9 (E-F), and 6 (G-H) had viral reactivation before iC9-T cell infusion and did not receive AP1903. Left panels (A,C,E,G) illustrate the viral load for each single patient at different times; right panels (B,D,F,H) illustrate the quantification of pathogen-specific T cells detected either by IFN-γ ELIspot or intracellular staining in the CD3⁺CD19⁺ and CD3⁺CD19⁻ T cells at multiple times.