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The selection of maximum concentrations for in vitro mammalian cell genotoxicity assays was reviewed at the 5th International Workshop on Genotoxicity Testing (IWGT), 2009. Currently, the top concentration recommended when toxicity is not limiting is 10mM or 5mg/ml, whichever is lower. The discussion was whether to reduce the limit, and if so whether the 1mM limit proposed for human pharmaceuticals...
In vivo genetic toxicology tests measure direct DNA damage or the formation of gene or chromosomal mutations, and are used to predict the mutagenic and carcinogenic potential of compounds for regulatory purposes and/or to follow-up positive results from in vitro testing. These tests are widely used and consume large numbers of animals, with a foreseeable marked increase as a result of the EU chemicals...
At the Washington ''2nd International Workshop on Genotoxicity Testing'' (25-26 March 1999) current methodologies and data for the in vitro micronucleus test were reviewed. As a result, guidelines for the conduct of specific aspects of the protocol were developed. Agreement was achieved on the following topics: choice of cells, slide preparation, analysis of micronuclei, toxicity, use of cytochalasin-B,...
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