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 the condensation of ectomesenchymal cells called odontoblasts seen in histologic sections of a developing tooth; the dental papilla lies below a cellular aggregation known as the enamel organ and differentiates into the dentin and dental pulp