title: Purification and mass spectral characterization of bacterial mutagens from commercial beef extract.
mesh_terms: D000818:Animals; D002417:Cattle; D005511:Food Handling; D013058:Mass Spectrometry; D008460:Meat; D009152:Mutagenicity Tests; D009153:Mutagens / Q000302:isolation & purification* / Q000494:pharmacology; D012486:Salmonella typhimurium / Q000187:drug effects
chemical_list: D009153:Mutagens