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).
Measurement of the total number of cells, membrane-enclosed protoplasmic masses constituting the smallest structural unit of an organism that is capable of independent functioning, in a specified sample of the aorta smooth muscle, the contractile soft tissue having fine myofibrils but lacking transverse striations composing the majority of the wall of the great artery arising from the left ventricle from which the systemic arterial system proceeds.