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.
anomaly in the involuntary bristling of hairs that occurs when an organism is cold or experiences strong emotions such as fear or awe
Comment:
The pilomotor reflex occurs in many mammals; for example, porcupines raise their quills when threatened. Piloerection as a response to cold or fear is vestigial in humans; as humans retain only very little body hair, the reflex (in humans) now provides no known benefit.