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).
A measurement of the amount of an immunoglobulin molecule possessing a specific amino acid sequence that binds to one or more types of collagen, the fibrous protein constituent of bone, cartilage, tendon, and other connective tissue, in a specified volume of serum, expressed as the last dilution of plasma at which a positive result could be obtained.