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 zygomaticus major and/or minor facial muscles that originate from the body of the zygoma and pass downwards to insert into the corner of the mouth and lateral aspect of the upper lip, respectively; these muscles receive their nerve supply on their deep surface from the zygomatic and buccal branches of the facial nerve and lift the corners of the mouth