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As an intracellular parasite, Trypanosoma cruzi is exposed to reactive oxygen species. The study of the proteins involved in the hydroperoxide detoxification cascade, tryparedoxin peroxidase included, may lead to the development of a more specific chemotherapy for Chagas'disease. In this work, the involvement of TcCPX in T. cruzi resistance to oxidant-mediated injury was investigated. At low concentrations...