SERPINB5 and chondrosarcoma: We report here that acquisition of both maspin and 14-3-3σ in chondrosarcoma cell lines is tightly associated with aberrant hypomethylation of their CpG islands and that expression of both epithelial markers could be induced in a nonexpressing chondrosarcoma cell line by addition of the DNA methyltransferase inhibitor 5-Aza-dC.