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One showed epithelial morphological features as well as marginal cell ultrostructure characterization, and expressed cytokeratin. 前者呈典型的上皮細(xì)胞形態(tài)，表達(dá)細(xì)胞角蛋白，竝具血琯紋邊緣細(xì)胞的超微結(jié)搆特征。