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Studies on the mechanism of action of ionizing radiations. VII. Cellular respiration, cell division, and ionizing radiations



Studies on the mechanism of action of ionizing radiations. VII. Cellular respiration, cell division, and ionizing radiations



Journal of General Physiology 35(6): 865-871



On x-irradiation of the eggs and sperm of Arbacia punctulata there was inhibition of respiration with relatively large doses, whereas there was an increase with small doses. The dose required to produce an increase of respiration depended on the degree of sensitivity of the cell to the effect of ionizing radiation. Sperm cells were more sensitive; then came fertilized eggs; unfertilized eggs were the least sensitive. The inhibiting effect of x-rays on cell division was observed even on irradiation with x-ray doses which produced an increase of respiration. These results are compared to similar effects produced by thiol reagents and are attributed to oxidation of the thiol compounds in the cell.

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Accession: 025583357

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PMID: 14938525

DOI: 10.1085/jgp.35.6.865


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