IFNG and infection: It is noteworthy that Vγ2Vδ2 T effector cells could confer homeostatic protection against lung plague lesions [16], and that IFNγ-producing Vγ2Vδ2 T cells were present in “lesions-free” kidney or liver after a late/subtle infection in these remote organs (Figs. 3,5, and [18]).