title: Evaluation of four concentration/extraction procedures on waters and effluents collected for use with the Salmonella typhimurium screening procedure for mutagens.
mesh_terms: D006114:Great Lakes Region; D009152:Mutagenicity Tests / Q000379:methods*; D009153:Mutagens; D012486:Salmonella typhimurium / Q000187:drug effects; D014873:Water Pollutants / Q000302:isolation & purification / Q000633:toxicity*
chemical_list: D009153:Mutagens; D014873:Water Pollutants