in order to enable the system to deal with the problem of mutation dependence on recombination , tests were performed on ( i ) the homogeneity of cell populations with respect to nuclear stage ; ( ii ) the fate of cells during post-irradiation incubation ; ( iii ) the colony-forming ability of g1 and g2 revertants , and ( iv ) cell viability on the mutation plates .
C0007634
the
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cell viability