Abstract
In vitro DNA chain breakage by bleomycin was enhanced by the addition of xanthine oxidase system. The effect of the xanthine oxidase system disappeared completely when superoxide dismutase was added, but not when catalase was added. From these results it is concluded that superoxide radical is one of the chemical mediators responsible for the enhancement of the DNA chain breakage action of bleomycin.
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More From: Biochemical and Biophysical Research Communications
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