. . . . . . . . . . "a(CHEBI:\"nitric oxide\") -| bp(GOBP:\"smooth muscle contraction\")" . "Approximately 61,000 statements." . "Copyright (c) 2011-2012, Selventa. All rights reserved." . "BEL Framework Large Corpus Document" . . "20131211" . "Cardiovascular Physiology Concepts" . "Cardiovascular Physiology Concepts" . "Other" . "The three most important endothelial-derived substances are: nitric oxide (NO), endothelin (ET-1), and prostacyclin (PGI2). NO and PGI2 act as vasodilators, whereas ET-1 serves as a vasoconstrictor." . . "Selventa" . . . . "2014-07-03T14:31:29.041+02:00"^^ . . .