In conclusion, GARD is a novel assay for assessment of sensitization. The powerful analysis of the full genome of MUTZ-3, or parts thereof, using so called Prediction Signatures, allows for a robust

readout that may answer questions of unknown chemicals’ ability to induce skin or respiratory sensitization, or both. The assay is simple to perform, with a majority of the laboratory steps being conducted according to standardized protocols provided by platform suppliers, thus constituting an attractive replacement for animal tests. GARD signatures have been patented by the authors. This work was supported by Grants from the Swedish Fund 5-FU price for Research Without Animal Experiments, Faculty of Engineering (LTH), the Swedish Research Council (K2010-79X-21371-01-3) and the European Commission as part of the Integrated project ‘Novel Testing Strategies for in vitro Assessment of Allergens; Sens-it-iv’ (LSHB-CT-2005-018681). The funding sources have had no function related to study design, collection, analysis and interpretation of data, or in writing the paper. We would

like to thank Ann-Charlott Olsson for microarray sample and technical assistance. “
“Avermectins are metabolites derived from the fermentation of the fungi Streptomyces avermitilis; these metabolites belong to the family of macrocyclic lactones and exhibit extraordinarily potent anthelmintic activity ( Burg et al., ALK inhibitor 1979 and Fisher and Mrozik, 1989). Abamectin (ABA) is a mixture of avermectins containing ⩾80% B1a and ⩽20% B1b ( Meister, 1992, Zeng et al., 1996 and Agarwal, 1998). Avermectin B1a and B1b differ chemically by the presence of a methylene or ethylene group at C-26 ( Zeng et al., 1996). According to Hayes and Laws (1990), these molecules have similar biological activities and toxicological properties. ABA is widely used

because of its potent anthelmintic and insecticidal action and wide spectrum of action. ABA is also used as an insecticide to control citrus, nut Myosin culture and household pests, such as fire ants ( Elbetieha and Daas, 2003). In veterinary medicine, ABA is administered to animals in a systematic way to control endoparasites and ectoparasites ( Shoop et al., 1995). The mechanism of ABA action is related to its effect on the γ-aminobutyric acid (GABA) system and Cl− channels. GABA receptors are responsible for regulating the neural basal tone of the brain (Turner and Schaeffer, 1989) and are in virtually all neurons of the central nervous system (CNS). The symptoms of ABA poisoning exhibited in laboratory animals include pupil dilation, vomiting, convulsions and/or tremors and coma (Lankas and Gordon, 1989). In addition, some studies have reported genotoxic effects of ABA (Molinari et al., 2010). As demonstrated by the in vivo studies ( Lowenstein et al., 1996 and Hsu et al.