when a noncytotoxic 50 microm concentration of beta-ara-a was added to the excised tumor cells immediately following a 14.5-gy in situ dose of x rays , cell survival in the inhibitor-treated cells was lower than in the untreated cells ( 0.018 compared to 0.056 ) , resulting in a pld repair inhibition factor of 3.1 .
C0007620
cell survival
C0007634
cells