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  • Title: Radiobiology of ultrasoft X rays. V. Modification of cell inactivation by dimethyl sulfoxide.
    Author: Raju MR, Schillaci ME, Carpenter SG, Goodhead DT, Ward JF.
    Journal: Radiat Res; 1996 May; 145(5):563-7. PubMed ID: 8619021.
    Abstract:
    The effects of the radioprotector dimethyl sulfoxide (DMSO) were investigated for carbon-K (0.28 keV) and aluminum-K (1.47 keV) X rays compared with 60Co gamma rays for inactivation of mouse C3H 10T1/2 cells. The protection factor for 2 M DMSO was found to be 2.8 for both of the ultrasoft X-ray energies, which is not significantly different from the protection factor of 2.6 found for gamma rays. The results indicate that the proportion of scavengeable lethal damage from gamma and X rays does not depend on the proportion of the total energy that is deposited by low-energy electrons of relatively high ionization density.
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