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Qβ phage titers dependence on host UV irradiation state after 18 h of incubation at 37°C. P 0 is the initiated free-phage concentration at time zero (t 0), P′ is the Qβ phage titers after 18 h of incubation at 37°C in the presence of irradiated Escherichia coli by increased UV dose (0, 45, 60, 90, and 120 mJ/cm2)
