Effects of atrazine and chlorpyrifos on the mRNA levels of HSP70 and HSC70 in the liver, brain, kidney and gill of common carp (Cyprinus carpio L.)

► The HSP70 gene expression was decreased by ATR, CPF and their mixture exposure. ► Now the information regarding the toxicity of ATR and CPF on freshwater fisher was less. ► This is the first report to study the subchronic effects of ATR and CPF on HSP gene expression in carp.