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.
a developmental anomaly involving molar teeth, whereby the body of the tooth and pulp chamber is enlarged vertically at the expense of the roots and the root canal length; characteristic features include an enlarged pulp chamber, absence of the usual constriction at the cemento-enamel junction, and apical shift of the pulp chamber floor and furcation area down the root