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Dose response of MS2 coliphage to monochromatic UV irradiation from a tunable laser. Results represent log reductions of the RT-qPCR signal (N0/N) measured from two fragments, 1,185 bases (■) and 2,169 bases (▲), compared to the log reduction of MS2 viral infectivity (C0/C) (×) (28) (n = 1). Data represented by open symbols, indicating the assay detection limit, were not used for data analysis. Note the different x axis values.
