Mutagenicity of Activated Carbon Adsorbate of Drinking Water in the Ames Assay.

Mutagenicity of activated carbon adsorbate of drinking water in the Ames assay.

Mutagenicity of activated carbon adsorbate from drinking water collected in Niigata City was assayed by the Ames assay. Adsorbate was extracted from activated carbon with benzene, and then with ethanol. Although the benzene extract was not mutagenic, the ethanol one showed the mutagenic activity for Salmonella typhimurium strains TA98 and TA100 with and without S9 mix. The ethanol extract was m...

The Ames Salmonella/microsome mutagenicity assay.

The Ames Salmonella/microsome mutagenicity assay (Salmonella test; Ames test) is a short-term bacterial reverse mutation assay specifically designed to detect a wide range of chemical substances that can produce genetic damage that leads to gene mutations. The test employs several histidine dependent Salmonella strains each carrying different mutations in various genes in the histidine operon. ...

Ames II Mutagenicity Assay Technical Documentation

Ames II Mutagenicity Assay Technical Documentation

Statistical features of a base-specific Salmonella mutagenicity assay are considered in detail, following up on a previous Ž . report comparing responses of base-specific Salmonella Ames IIe strains with those of traditional tester strains. In addition to using different Salmonella strains, the new procedure also differs in that it is performed as a microwell fluctuation test, as opposed to the...

Nonparametric regression analysis of data from the Ames mutagenicity assay.

The Ames assay has received widespread attention from statisticians because of its popularity and importance to risk assessment. However, investigators have yet to routinely apply modern regression methods that have been available for more than a decade. We study yet another approach, the application of nonparametric regression techniques, not as the ultimate solution but rather as a framework ...