IFNG and infection: The function and phenotype of gut‐derived γδ T cells is less well known, though studies have shown that infection with HIV leads Vδ1 to shift their memory phenotype and lose CD45RA expression, and Vδ2 to produce less IFN‐γ [5] while γδ T cells in general show an increase in the gut‐homing markers CCR9 or CD103[15].