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Active inflammatory bowel disease (IBD) is associated with increased activity of inducible nitric oxide synthase (iNOS), which increases both mucosal and plasma nitric oxide (NO) levels. Increased fractional exhaled nitric oxide (FeNO) levels have been described in patients with IBD. Currently, hand-held FeNO measurement devices are available, enabling a fast in-office analysis of this non-invasive...
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