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. 1987 Apr;151:169–188.

Further characterisation of the extracellular matrix in the mandibular condyle in neonatal mice.

M Silbermann 1, A H Reddi 1, A R Hand 1, R D Leapman 1, K Von der Mark 1, A Franzen 1
PMCID: PMC1261710  PMID: 3308801

Abstract

This study provides newer information concerning the extracellular matrix of neonatal condylar cartilage--a genuine representative of a secondary type of cartilage. In addition, the data presented hereby indicate that the condylar cartilage contains a population of progenitor cells that synthesise Type I collagen rather than Type II. Under normal conditions in vivo local biomechanical factors influence the progenitor cells to differentiate into cartilage cells and thereby to shift their synthetic pathway from Type I collagen to Type II collagen--the typical collagen of cartilage extracellular matrix. In the absence of such biomechanical effects the condylar progenitor cells seem to proceed with their inherent differentiation pathway and express an osteogenic phenotype (Fig. 21).

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