in the experiments described here , hela cells were cultured for several days with plant saponins or flavonoids and analyzed to measure i ) recombination activity of the cell extract by induction of tcr colonies from two mutant dnas ( mutants 1 and 2 , which are both tetracycline sensitive ) after transformation into e. coli reca- , and ii ) repair synthesis of nuclear dna followed by incorporation of 3h-thymidine .
C0034865
recombination
C1419240
reca