The oxidative phosphorylation and the activity of polyenzymatic systems in the rat liver mitochondrial membranes were studied upon a 5 day administration to rats of butylcaptax in the dose of 1/10 LD50. It is established that butylcaptax led to significant disturbances in the system of oxidative phosphorylation and in the transfer of electrons in the rat liver mitochondrial respiratory chain.
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