The Clinical Measurement Ontology (CMO), Measurement Methods Ontology (MMO), and Experimental Condition Ontology (XCO) are currently being developed at the Rat Genome Database. For more information about these vocabularies please see Shimoyama et al. Three ontologies to define phenotype measurement data. Front Genet. 2012;3:87. Epub 2012 May 28 or contact us (http://rgd.mcw.edu/contact/index.shtml).
Either of two compounds (C12H30Br2N2 or C12H30Cl2N2) used in the treatment of hypertension. Hexamethonium is a depolarising ganglionic blocker, a nicotinic acetylcholine receptor antagonist that acts in autonomic ganglia by binding in or on the receptor but not the acetylcholine binding site itself.