Does COPD risk vary by ethnicity?
Black people in London were half as likely as whites to have COPD after adjusting for lower smoking rates in blacks. It seems likely that the differences observed were due either to ethnic differences in the way cigarettes were smoked or to ethnic differences in susceptibility to COPD.
These data support a key role of NO in host defenses against TB and identify novel modulating factors for iNOS induction in human macrophages.