title: The multicellular tumor spheroid: a quantitative model for studies of in situ immunity.
mesh_terms: D000818:Animals; D002455:Cell Division; D003602:Cytotoxicity, Immunologic; D006801:Humans; D007111:Immunity, Cellular; D007962:Leukocytes / Q000276:immunology; D051379:Mice; D008954:Models, Biological; D009368:Neoplasm Transplantation; D009374:Neoplasms, Experimental / Q000276:immunology* / Q000473:pathology; D010529:Peritoneal Cavity / Q000276:immunology; D014184:Transplantation, Homologous