title: Proceedings: Studies on a nonspecific and non-cytotoxic cytostatic factor produced by macrophages.
mesh_terms: D000818:Animals; D003601:Cytotoxicity Tests, Immunologic; D005260:Female; D008264:Macrophages / Q000276:immunology*; D008325:Mammary Neoplasms, Experimental / Q000276:immunology*; D008545:Melanoma / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D014316:Tritium; D013936:Thymidine