title: Duration of S9 activity in agar overlay.
mesh_terms: D001711:Biotransformation; D008862:Microsomes, Liver / Q000201:enzymology*; D009152:Mutagenicity Tests; D010655:Phenylenediamines / Q000378:metabolism*; D012486:Salmonella typhimurium / Q000235:genetics; D013997:Time Factors
chemical_list: D010655:Phenylenediamines