Researchers at the Science University of Tokyo discover that the soot emitted in diesel exhaust contains an endocrine inhibitor. Scientists noticed testicular abnormalities in male mice that had been exposed to diesel exhaust. Diesel exhaust soot then was added to cultured testicular cells. Scientists discovered production of proteins that serve as receptors for male and female sex hormones was markedly depressed. Diesel-exhaust soot contains more than 1,000 different chemicals and the ...

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