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 (https://rgd.mcw.edu/rgdweb/contact/contactus.html).
An echocardiographic measurement of the amount of time between the maximum 'E point', that is, the maximum velocity of passive blood flow from the atrium to the ventricle, and the return to baseline at the end of early mitral flow.