The Mouse Adult Gross Anatomy Ontology and Mammalian Phenotype Ontology are downloaded weekly from the Mouse Genome Informatics databases at Jackson Laboratories (ftp://ftp.informatics.jax.org/pub/reports/index.html). For more information about these ontologies, see the MGI Publications Page at http://www.informatics.jax.org/mgihome/other/publications.shtml.
any structural anomaly of a small epithelioid structure consisting of a small cluster of chemoreceptive and supporting cells located near the bifurcation of the common carotid artery that serves as a chemoreceptive organ that senses the pH, carbon dioxide, and oxygen concentrations in the blood and plays a crucial role in their homeostatic control