FIG 5.

Growth kill curve of T4 sublines on E. coli B (A) and E. coli K-12 (B) showing lytic activity of T4 phages for 16 h. The OD₆₀₀ was collected at 5-min intervals, and each point in the graph is the mean for 36 replicates (12 technical replicates in three biological repeats on separate occasions). Top and bottom dotted lines show the standard errors of the means. Growth of the host bacteria was taken as the positive control, and the growth medium (LB) was used as the negative control.