Chronic hypoxia upregulates RNA polymerase I, alters methylation on ribosomal RNAs
 

Hypoxia -- where a tissue is deprived of an adequate supply of oxygen -- is a feature inside solid cancer tumors that renders them highly invasive and resistant to treatment. Study of how cells adapt to this critical stressor, by altering their metabolism to survive in a low-oxygen environment, is important to better understand tumor growth and spread.

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