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.
inability of the blastocyst and/or the uterine environment to successfully synchronize allowing attachment of the blastocyst to the epithelial lining of the uterus, its penetration through the epithelium and any subsequent physiological interactions necessary to sustain embryonic development