A regional part of brain consisting of multiple brain regions that are not related through a simple volummetric part of hierarchy, e.g., basal ganglia[NIF].
aligned anatomical group
anatomical cluster +
arthropod optic lobe
brain endothelium
brain gray matter +
brain marginal zone +
brain meninx +
brain ventricle/choroid plexus +
brain white matter +
calcified structure of brain +
cephalopod optic lobe
cerebral subcortex +
composite part spanning multiple base regional parts of brain +