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CLINICAL MEASUREMENT - ANNOTATIONS

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:concentration of acetylcholine at which the reduction in force during dilation of a blood vessel is half the maximum value (EC50)
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Accession:CMO:0000724 term browser browse the term
Definition:A calculated value for the concentration of acetylcholine (ACh), the ester of acetic acid and choline with chemical formula CH3C=OO(CH2)2-N(+)-(CH3)3 and IUPAC name 2-acetoxy-N,N,N-trimethylethanaminium, which acts as a neurotransmitter, at which the energy exerted during the active expansion in the diameter of a blood vessel in response to the application of ACh is halfway between the highest value, that is the force at greatest constriction (often measured in a pre-constricted blood vessel), and the lowest achievable value of such contractile energy during ACh-induced relaxation of the vessel wall (i.e. the maximum effect of Ach which is the minimum contractile energy).
Synonyms:exact_synonym: acetylcholine half maximal effective concentration (EC50)
 xref: CHEBI:15355

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Related Phenotype Data for Term "concentration of acetylcholine at which the reduction in force during dilation of a blood vessel is half the maximum value (EC50)" (CMO:0000724)

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