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the zone of the pulp of the tooth between the pulp core and the cell-poor zone (q.v.); it is rich in fibroblasts and mesenchymal cells and provides cells that protect the pulp from bacterial invasion by the formation of reparative dentin.
Farlex Partner Medical Dictionary © Farlex 2012
The area of increased cell frequency between the cell-free zone and the central pulp of the tooth.
See also: zone
Medical Dictionary, © 2009 Farlex and Partners