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. 2014 Aug 20;7:123. doi: 10.1186/s13068-014-0123-9

Figure 4.

Figure 4

Quantification of phage infectivity. Infectivity was determined for M9 medium at initial pH levels ranging from pH 3.5 to pH 7. (a) Phage B1, (b) phage B2, and (c) cocktail of phages B1 and B2. Infectivity was calculated as the difference in the integrals of the curves in Figures 3 and 2.