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  • Title: Superoxide dismutase in normal and malignant tissues in different species.
    Author: Van Balgooy JN, Roberts E.
    Journal: Comp Biochem Physiol B; 1979; 62(3):263-8. PubMed ID: 318445.
    Abstract:
    1. Superoxide dismutase (superoxide: superoxide oxido-reductase, E.C. 1.15.1.1) in different species was determined quantitatively and qualitatively. Although quantitative differences were minor, there were significant differences in the isoenzyme patterns among the species. 2. No quantitative differences were found in superoxide dismutase (SOD) activities in the brains of mice between 1 and 23 days of age. The mitochondrial isoenzyme increased with age, attaining maximal levels between 9 and 12 days. In the six, regions of adult rat brain studied, highest values of SOD were found in the hypothalamus and lowest in the cortex. 3. SOD levels generally were lower in several transplantable mouse and rat tumors than in normal tissues of these species. Mn-SOD was not detected in the tumors studied by the methods employed.
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