Author information Experimental Toxicology Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA. Abstract BACKGROUND: Exposure to diesel exhaust (DE) is linked to vasoconstriction, endothelial dysfunction, and myocardial ischemia in compromised individuals. OBJECTIVE: We hypothesized that DE inhalation would cause greater inflammation, hemato