Immunohist ochemisty was used to detect expression of cytokeratin K19 in cultured outer roo t sheath cells.

• 结果:外根鞘细胞具有较表皮角质形成细胞更强的增殖能力,而且在培养的外根鞘细胞中有大量细胞角蛋白K19阳性的细胞。