• Thymidine analog, preferentially incorporated into cellular DNA in place of thymidine, producing increased radiosensitivity of the cell: Int. J. Radiat. Oncol. Biol. Phys., 10, 1399 (1984); 21, 709 (1991). Mutagen used in genetic research: Mutat. Res., 258, 161 (1991). Reviews on use in diagnostics and research: Histochem. J., 27, 339, 923 (1995; 28, 531 (1996).