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.
the appearance of lower than Mendelian ratios of organisms of a given genotype due to death of some, but not all of the organisms within the embryonic period prior to the completion of organogenesis (Mus: prior to E14)