SUI Li1 GUO Jiyu1 KONG Fuquan1 NI Meinan1 CAI Minghui1, 2 YANG Mingjian1, 2 LIU Jiancheng1 ZHAO Kui1, et al. Investigation of direct and indirect interaction of DNA damage induced by high LET ~7Li ions[J]. Nuclear techniques, 2007, (4): 250-254.
SUI Li1 GUO Jiyu1 KONG Fuquan1 NI Meinan1 CAI Minghui1, 2 YANG Mingjian1, 2 LIU Jiancheng1 ZHAO Kui1, et al. Investigation of direct and indirect interaction of DNA damage induced by high LET ~7Li ions[J]. Nuclear techniques, 2007, (4): 250-254.DOI:
In order to investigate the direct and indirect interaction of DNA damage induced by high LET heavy ions as well as the protective function of scavenger by means of atomic force microscopy
samples of pUC19 plasmid DNA aqueous solution
pUC19 plasmid DNA aqueous solution with scavenger(mannitol) and dry DNA are irradiated by 7Li ions from the HI-13 Tandem accelerator in China Institute of Atomic Energy(CIAE). Results show that the indirect interaction of free radical plays an important role in DNA strand break induced by 7Li ions and mannitol can protect the DNA molecules effectively.