the human fibrosarcoma cell line , ht1080 , used in the present study exhibited a much greater rate of turnover than the normal fibroblasts as determined from tritiated thymidine incorporation ( 5 day labeling index of 66 % vs 20 % ) and no pld repair , as determined by delayed plating experiments , in plateau phase .
C0016057
fibrosarcoma
C0016030
fibroblasts