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:
length of intestine affected by colonic aganglionosis to total length of colon ratio
A calculated measurement in which the value of the cumulative linear size along the longest dimension of the segments of the colon affected by colonic aganglionosis is divided by the value of the entire linear distance between the two ends of that colon and presented as a ratio, fraction, quotient or percentage. Colonic aganglionosis is the absence of parasympathetic ganglion cells in any or all of the myenteric plexus, a network of autonomic nerve fibers within the tunica muscularis of the wall of the alimentary canal in general and of the colon in particular. The colon is the segment of the large intestine between the cecum and the rectum.
Synonyms:
related_synonym:
aganglionosis extent; length of intestine affected by Hirschsprung disease to total length of colon ratio; length of intestine affected by intestinal aganglionosis to total length of colon ratio