. The basic aspects of radiation effects on living systems. Radiation -- Physiological effect. /6- Physical and Chemical Factors Modifying the Sensitivity of Cells to High-Energy and Ultraviolet Radiation * ALEXANDER HOLLAENDER Biology Division Oak Ridge National Laboratory Oak Ridge, Tennessee Microorganisms are in some ways ideal materials for obtaining imme- diate quantitative information on some of the basic aspects of radiation effects. It is well known that they can often be handled in very large 100 Aspergillus terrcus Normal spores Irradiated dry â Proton or alphas ⢠X-rays. 0 20 40 1
. The basic aspects of radiation effects on living systems. Radiation -- Physiological effect. /6- Physical and Chemical Factors Modifying the Sensitivity of Cells to High-Energy and Ultraviolet Radiation * ALEXANDER HOLLAENDER Biology Division Oak Ridge National Laboratory Oak Ridge, Tennessee Microorganisms are in some ways ideal materials for obtaining imme- diate quantitative information on some of the basic aspects of radiation effects. It is well known that they can often be handled in very large 100 Aspergillus terrcus Normal spores Irradiated dry â Proton or alphas ⢠X-rays. 0 20 40 120 60 Dose, kilorep Fig. 1. Comparative lethal action of x-rays (250 kev), of protons, and of alpha particles on dry spores of Aspergillus terreus. [From Stapleton and Martin (18).] numbers, thus giving statistical results on effects which are hardly rec- ognizable on higher organisms. They are, in general, not suitable for * This work was done under Contract No. W-7405-Eng-26 for the Atomic Energy Commission. 285. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Symposium on Radiobiology (1950 : Oberlin College); Nickson, James J. New York, Wiley
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