Lawn kill assay results of E. coli are shown as boxplots, whiskers indicate maximum and minimum values, box bounds indicate 25th and 75th percentile, with center line indicating the median; b1813 with phages WT 15 and CAP 15.2. Significances * P < 0.05 and *** P < 0.001, P values (two-sided Mann–Whitney U test) were calculated from two independent biological duplicates comprised of ten replicates. Holm’s method adjusted P values are 1.6 x 10 -7. Distribution of 10 EoP profiles of survivor colonies purified from WT 15 lawn kill assay (insets). Resistant, no plaque formation with tested phage; sensitive, EoP similar to that of parental strain; reduced, EoP (>1–2 log 10 ) lower than that of the parental strain.
