The DNA oxidative damage is believed that it is repaired mainly by the base excision repair (BER) mechanism with many repairing enzymes.

已知细胞中DNA氧化性损伤主要通过碱基切除修复(BER)来完成，许多修复酶参与了这一修复过程。

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This, in turn, regulates many of the cell's vital functions, such as the synthesis and repair of DNA, the synthesis of proteins and the activation and regulation of enzymes.

从而，调制了许多细胞的重要功能，包括DNA的合成及修复、蛋白质的合成与酶的活化及调节。

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It also increases the DNA damage that chemotherapy does to cancer cells by preventing the enzymes that normally repair such damage.

BBC: 'Heat treatment' for breast cancer