Mouse L cells show a cyclic32 P labeling of DNA following relatively low doses of x-rays. This effect appeared for cells which had been starved or treated with 2,4-dinitrophenol (DNP) but not for cells irradiated in growth medium. The response consisted of a rapid uptake and loss of label. Changes in ATP metabolism paralleled the cyclic labeling of DNA. This behavior possibly explains the enhanced repair of radiation injury previously described for DNP treated cells.

This content is only available as a PDF.
You do not currently have access to this content.