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.
atypical production of or inability to produce the endocrine cells found in the Islets of Langerhans that produce the hormone ghrelin, and/or accumulation of pancreatic epsilon cell precursors