Name:	brain
Synonyms:	brain structure
Definition:	Cavitated compound organ which is comprised of gray and white matter and surrounds the cerebral ventricular system.
Ontology:	Anatomy Ontology [ZFA:0000008]

Name:	axon
Synonyms:
Definition:	The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter.
Ontology:	GO: Cellular Component [GO:0030424] QuickGO AmiGO