title: Picture story. To kill or not to kill.
mesh_terms: D015395:Histocompatibility Antigens Class I / Q000502:physiology; D006801:Humans; D008024:Ligands; D008958:Models, Molecular; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology*
chemical_list: D015395:Histocompatibility Antigens Class I; D008024:Ligands