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3-D annotation volumes were updated in the June 2013 May 2015 release to reflect changes in the atlas drawings and ontology. Also note that the volumes are now in a 32-bit format to accommodate large structure identifiersthe remapping to the new Allen Mouse Common Coordinate Framework (CCFv3). Annotation volumes from the October 2014 release (mapped to CCFv2) can be access through our data download server (see instructions).

Five volumetric data files are available for download: