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).
Calculation of a difference between representations of blood pressure in a treated versus untreated state or over time, after the original values have been normalized or adjusted by a mathematical process or computation. Blood pressure is the pressure, or force per area, exerted by circulating blood against the walls of the blood vessels. The pressure is dependent on the energy of the heart action, elasticity of the vessel walls and volume and viscosity of the blood.