| http://www.w3.org/ns/prov#value | - heral and central nervous systems, whereas endothelial NOS regulates vascular tone by generating NO in blood vessels; these constitutive forms of NOS are critical for normal physiology.1,26,34 iNOS is expressed in response to various stimuli, including hypoxia and cytokines (interferon-??, interleukin-1, TNF-??), by fibroblasts, macrophages, neutrophils, and vascular smooth muscle cells, thereby g
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