Proliferation and intracellular cytokine T cells assays in response to polyclonal SEB stimulation, influenza, TT, and rotavirus. Frequency of CD4+ (A) and CD8+ T cells (B) that proliferate (CFSE-), producing IL-2 (CFSE-IL-2+) or IFNγ (CFSE-IFNγ+) of the patients and their respective matched controls after stimulation with SEB, influenza (FLU), TT, and rotavirus (RV). Patient 1 and patient 2 correspond to the patients with 22q11.2PDS and 22q11.2DDS, respectively.