Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Mutagenic Activity of Acetamide, N,N-Dimethyl in the Salmonella/Microsome Assay, with Cover Letter dated 09/29/1995 (Sanitized).
CORP Author Du Pont de Nemours (E.I.) and Co., Wilmington, DE. Haskell Lab. for Toxicology and Industrial Medicine.; Environmental Protection Agency, Washington, DC. Office of Toxic Substances.
Year Published 1995
Report Number OTS-86960000209S
Stock Number OTS0558349
Additional Subjects Toxicology ; Health effects ; Toxic substances ; Laboratory animals ; Genotoxicity ; Gene mutations ; Bacteria ; In vitro ; CAS No 127-19-5
Library Call Number Additional Info Location Last
NTIS  OTS0558349 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 05/12/2010
Collation 10p
The assay is performed in the presence and the absence of a rat-liver homogenate activation system. In the absence of an activation system, 0.1 mI of a solution of the test sample and approximately 10e bacteria in 0.1 mI are added to 2 mi of top agar (0.6% ager, 0.6% NaCI, 0.05 mM L-histidine, 0.05 mM blotin). These components are mixed and poured on the surface of a plate containing 20 ml of Davis minimal agar. To treat in the presence of an activation system, 0.5 mi of 5-9 mix is added to the bacterla-test sample-top aGar mixture. S*9 is the 9,000 x g supernatant of liver hGECgOnBfe ifGo ratS Given 500 mg of ArocIor 12SO/kg five days before sacrifice. The S*9 mix contains per ml: 0.3 mI of S-9, 8 mM MgCI2, 33 mM KGI, 5 mM glucose-6-phosphate, 4 mM NADP and 100 nd4 sodium phosphate (pH 7.4). The S-9 mix is added to the bacteria, test sample and top agar. These components are mixed and immediately poured over the minimal ager plate. The reverted colonies are counted after the plates are Incubated at 37 deg. for 48 hr. Positive (known mutagens) and negative (solvent) controls are included in each assay. In assays in which an activaticr. system is present, an additional negative control (i.e., no S-9 mix) is included.