?:definition
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refers to one of three types of allocortex defined on the basis of cytoarchitecture. The others are paleocortex and archicortex. Periallocortex is a transition zone between the proisocortex of neocortex and allocortex. It has two components: peripaleocortex and periarchicortex, which represent the transition zones of paleocortex and archicortex respectively ( Stephan-1976 ).
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