title: The central nervous system control of the immune system--enkephalins: antitumor activities.
mesh_terms: D000818:Animals; D001921:Brain / Q000502:physiology*; D004745:Enkephalins / Q000276:immunology*; D007939:Leukemia L1210 / Q000276:immunology; D051379:Mice; D009369:Neoplasms / Q000276:immunology*
chemical_list: D004745:Enkephalins