Ionizing radiation biological inactivation

The Mn bound to the Mn-depleted, Tris-treated PS n membranes lowered with the Increase of radiation dose (FIGURE 1). Molecular size of a biological molecule inversely relates with its sensitivity to the ionizing radiation with an empirical equation (5) Molecular mass (Da) = 6.4 X 10 Doy S where D3Y is a dose (in rad) that lowers the binding to 37% of the non-irradiated sample and S is a temperature factor of 3.2 for radiation inactivation of biological molecules at -ISO C (6). 

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