NI Meinan, ZHAO Kui, SUI Li, et al. AFM observation of DNA molecules and their double strand fragments brokenby α-particles[J]. Journal of Radiation Research and Radiation Processing, 2004,22(2):106-110.
NI Meinan, ZHAO Kui, SUI Li, et al. AFM observation of DNA molecules and their double strand fragments brokenby α-particles[J]. Journal of Radiation Research and Radiation Processing, 2004,22(2):106-110.DOI:
DNA , the carrier of bio-information, is the most important target molecule in radiobiology. In order to understand the DSB mechanism of DNA molecules induced by ionizing radiations, the structure and property of DNA molecule and its DSB fragment shall be studied. In this paper, three kinds of purified DNA molecules were observed by Tapping Mode AFM in atmosphere. One kind of the DNA molecules in water solution was irradiated by ,241,Am-α source irradiation device. Intuitive images of the molecules and DSB fragments were obtained. By this way, further study of statistic model of probability of the DSB of DNA molecules induced by various radiations, especially heavy ions, could be carried out.
关键词
DNAAFM生物样品吸附AFM针尖展宽效应双链断裂
Keywords
DNAAFMBio-sample AdsorptionAFM Tip Broadening EffectDouble Strand Breaks