IFNG and autoimmune hepatitis: Comparable frequencies between the PBMCs of patients with AIH (irrespective of disease state-active vs. remission) and healthy control groups In AIH patients, reversal of the physiological Vδ2:Vδ1 ratio with more Vδ1 cells found in the periphery The number of Vδ1 cells producing IFN-γ was significantly higher in patients with AIH compared to healthy controls