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Enhanced H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub> dilation after exercise is dependent on K<jats:sub>v<\/jats:sub> and BK<jats:sub>Ca<\/jats:sub> channels and at least in part on in colocalization of BK<jats:sub>Ca<\/jats:sub> channel and PKA and independent of PKA dimerization. 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