title: Letter: Immune surveillance revisited.
mesh_terms: D000951:Antigens, Neoplasm; D000956:Antigens, Viral; D007109:Immunity; D007111:Immunity, Cellular; D007112:Immunity, Maternally-Acquired; D007116:Immunization, Passive; D007153:Immunologic Deficiency Syndromes / Q000150:complications; D007165:Immunosuppression Therapy; D008223:Lymphoma / Q000209:etiology; D009369:Neoplasms / Q000276:immunology*; D013934:Thymectomy
chemical_list: D000951:Antigens, Neoplasm; D000956:Antigens, Viral