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The radiosensitizing effects of caffeine on two rat yolk sac tumor cell lines with a different p53 status were investigated. A reduction of radiation-induced G 2 arrest was caused by caffeine at a concentration of 2 mM in both cell lines. The reduction of survival was observed in a combination of radiation and 2 mM caffeine only in a lower radiation dose range, but not in a higher dose range...
Purpose: In order to investigate the role of potentially lethal damage repair (PLDR) in cellular radiosensitivity, PLDR and its inhibitory effect by caffeine was examined. In addition, cell cycle distribution was also examined. Materials and methods: Two rat yolk sac tumor cell lines, NMT-1 and NMT-1R, with different radiosensitivities in vitro were used. The capacity for PLDR was examined using confluent-phase...
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