CD1D and neoplasm: Several other groups have explored delivering tumor cells or specific tumor antigens with α-GalCer using vehicles such as dendritic cells (36, 50, 51), dendritic cells-derived exosomes (19), dendritic cells loaded with tumor-derived exosomes (52), PLGA nanoparticles (34), cationic liposomes (33), chemically conjugated α-GalCer-tumor peptide antigen compound vaccine (53), or α-GalCer-loaded recombinant soluble CD1d protein fused with single chain antibodies against neoantigen (35, 54).