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terça-feira, 17 de julho de 2012

Researchers outline bacterial system to assess nanoparticle mutations

Scientists have found that titanium dioxide nanoparticles cause genetic mutations in a bacterial system they state could be used as a new approach to determine the mutagenic potential and specificity of manufactured nanomaterials.
The researchers, based at the King Saud University in Saudi Arabia, analysed the mutations occurring in a gene incorporated in E. coli bacteria exposured to the nanoparticles, which showed 38 point mutations in a 296 nucleotide-long gene sequence.
Cover imageTheir results are described in the journal Mutation Research/Genetic Toxicology and Environmental Mutagenesis.

Fonte: Chemical Watch