Objective To review the recent research progress about the chondrogenic ability of bone marrow-derived mesenchymal stem cells.

目的综述近年骨髓基质干细胞成软骨分化的研究进展。

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Objective to isolate and cultivate human periodontal ligament stem cells (PDLSC) and to investigate the feasibility of PDLSC in vitro differentiation into chondrogenic phenotype.

目的从成体人牙周组织中分离培养牙周韧带干细胞，研究其分化为软骨细胞的可行性。

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Destruction of spheno-occipital bone can be found in roentgenogram. It is difficult to distinguish chondroid chord?oma from chordoma and chondrogenic tumors which occur in this region.

本病与发生于颅底的脊索瘤和软骨源性肿瘤不易鉴别，组化染色与电镜检查对鉴别诊断有帮助。

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