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Resistance to WT T7 and T7-Re, T7-ReRb, and T7-ReRd2Rb. E. coli cells (5 × 108 total in 3 ml of soft agar) were infected by the indicated phage at a MOI of 0.5 and overlaid on plates. After overnight incubation, resistant colonies could be visualized on the plates. The number of resistant colonies arising on each plate is indicated in parentheses.
