title: Natural killer cells: definition of a cell type rather than a function.
mesh_terms: D000818:Animals; D000954:Antigens, Surface / Q000032:analysis; D002454:Cell Differentiation; D003602:Cytotoxicity, Immunologic; D005786:Gene Expression Regulation; D005796:Genes; D006801:Humans; D007694:Killer Cells, Natural / Q000145:classification* / Q000166:cytology / Q000276:immunology; D008285:Major Histocompatibility Complex; D051379:Mice; D013602:T-Lymphocytes, Cytotoxic / Q000145:classification* / Q000166:cytology / Q000276:immunology
chemical_list: D000954:Antigens, Surface