CLEC4D and neoplasm: The key molecular determinants for tumor recognition by Vγ9Vδ2is a C-type lectin receptor and plays an important role in the ligand recognition by γδ T cells.T-cells come from NKG2D , which provides activation signals by binding to its ligands such as MIC and ULBP familiesis a C-type lectin receptor and plays an important role in the ligand recognition by γδ T cells.[62, 63].