摘要：

Characterizes the enzyme responsible for superoxide anion (O2) production in the adventitia, and shows that this enzyme is a constitutively active NADPH oxidase. Roles of superoxide anion in the endogenous suppression of endothelium-derived nitric oxide bioactivity; Roles played by reactive oxygen species in the body; Localization of the constitutive O2-generating activity; Details on the study.

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