| http://www.w3.org/ns/prov#value | - Moreover, fibroblasts and macrophages can release TNFa and other cytokines that stimulate NADH oxidase activity in SMCs, further reducing NO levels and increasing vascular SM contractile tone.[2] Superoxide as well as other cytokines released by the activated stromal cells can also stimulate SMC proliferation and activation of adventitial progenitor cells, which may play a role in intimal lesion f
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