Fig. 1. Telomere length and telomerase activity in chondrosarcoma cell lines. Initial mean telomere length (columns) and relative telomerase activity (boxes +/- standard deviations) in chondrosarcoma cell lines (JJ, FS, 4BG, 105, CS-2, CS-3, CS-4, CS-5, CS-6, CS-7, CS-8, CS-9, CS-10, CS-11, CS-12, and CS-13), enchondroma cell lines (EN-1 and EN-2), in normal chondrocytes (CH), and in chondrocytes transduced with the human telomerase gene (hTERT) are shown. Bars, SD.