CD4 and cancer: THP1 and J774A.1 -sEVs: 30-300 nm, mean diameter of 100 nm In vitro: Bioprinted exo-ssDNA-SA-FasL triggered the apoptosis in cancer cell PCI-13 In vivo: Intraperitoneal injections of Exo-ssDNA-SA-FasL inhibited the proliferation of donor CD4+ T cells in F1 mice