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).
Any chemical substance which decreases or interferes with the activity of a potassium ion channel, that is, a complex of membrane-bound and membrane-spanning proteins that specifically allow diffusion of positively charged potassium ions across a cell membrane.