title: RNA as a biological response modifier: a reassessment.
mesh_terms: D000818:Animals; D001483:Base Sequence; D006801:Humans; D007109:Immunity; D008214:Lymphocytes / Q000378:metabolism; D008221:Lymphoid Tissue / Q000502:physiology; D012313:RNA / Q000276:immunology / Q000502:physiology*; D012333:RNA, Messenger / Q000502:physiology
chemical_list: D012333:RNA, Messenger; D012313:RNA