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 measurement which has been normalized, adjusted or derived by a mathematical process or computation, of the number of dead offspring in a litter or prospective litter. A litter or prospective litter refers to the products of one gestation produced by a multiparous mammal.