“…)ellagic acid …, mitozolomide and methyl 3-(2-chloroethyl)-4-oxoimidazo[5,1-d]-1,2,3,5-tetrazine-8-ca rboxylate but not with nitrogen mustard; (…; (iv) ellagic acid increases the frequency of depurination and strand break formation induced by CNU without affecting the sequence-selective pattern of depurination.”