Article
Carcinogens induce genetic tandem duplications in Salmonella.
Mutation research - 1 Jan 2000
Pall M L, Hunter B J
Abstract excerpt
Extensive studies have shown that chemical carcinogenesis involves an initiation-promotion pattern. A gene amplification model of carcinogenesis predicts that initiation involves induction of a genetic tandem duplication. We use a system developed by Anderson and Roth to select for tandem duplication of the histidine operon of Salmonella typhimurium by selection for resistance to 3-amino-1,2,4-triazole. Evidence...
Topics
- Amitrole
- Azaserine
- Carcinogens
- Drug Resistance, Microbial
- Heterozygote
- Methyl Methanesulfonate
- Methylnitronitrosoguanidine
- Mutagenicity Tests
- Mutagens
- Mutation
- Propiolactone
- Salmonella typhimurium
