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).
Term:
logarithm of the concentration of potassium chloride at which the force of blood vessel contraction is half the maximum value (Log EC50)
A calculated value for logarithm of the concentration of potassium chloride (KCl) at which the energy produced by the active reduction in the diameter of a blood vessel in response to the application of KCl is halfway between the baseline value and the highest achievable value of such KCl-induced contractile energy. The logarithm of the concentration is the exponent indicating the power to which 10 must be raised to obtain that concentration value.