LAG3 and infection: Similar to F/F/S infection, the lungs of IgMi mice with F/F/Kp infection had higher numbers of total CD8+ T cells, CD8+ TRMs, influenza-specific CD8+ T cells, and CD8+ T cells coexpressing PD-1, LAG-3, and TIM-3 (Supplemental Figure 11, G–J).