Pyridine Nucleotide-Cytochrome C Reductases in Rats Exposed to Low Oxygen Tensions

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Abstract
Summary Pyridine nucleotide-cytochrome c reductase activities of whole rat liver and its cell fractions were determined in high altitude exposed rats and the results compared with those obtained in sea level rats. DPNH-cytochrome c reductase activity was higher in the low oxygen tension exposed rats, whereas the TPNH-cytochrome c reductase activity did not show any appreciable change. The significance of these findings is discussed.