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Histological changes and micronucleus induction in the zebra mussel Dreissena polymorpha after paraquat exposure
Histology and Histopathology
The herbicide paraquat (PQ), still widely used in developing countries, represents a serious risk factor for human and environmental health. To test the sublethal effects of PQ on the freshwater bivalve Dreissena polymorpha, mussels were exposed to 0.125, 0.250, 0.500 mg/L for 7 and 14 days and histologically screened. PQ's genotoxic potential was also determined in haemocytes by the micronucleus, MN, assay. At concentrations > or = 0.250 mg/L, severe lesions, such as cellular vacuolation,doi:10.14670/hh-21.829 pmid:16691535 fatcat:jyanaode5vcxfo7u3epamgvhwm