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 experimental condition in which the internal or external environment of an organ, that is, a differentiated, structural part of a system of the body that performs a specific function, is experimentally manipulated, for example through perfusion, increased or decreased blood flow, etc. without removal from the body.