CD4 and neoplasm: showed that the allogenic Vδ2(+)‐T‐cell‐derived exosomes induced more apoptosis in Epstein–Barr virus (EBV)‐associated tumour cells via the Fas/FasL and tumour necrosis factor‐related apoptosis‐inducing ligand (TRAIL) pathways and promoted stronger CD4(+) and CD8(+) T‐cell‐mediated antitumour in tumour‐bearing mice than autologous exosomes.46