Efficiency of plating scores (EOPs)* for bIL67 and bIL170.

*EOP (efficiency of plating): PFU (plaque forming units)×ml−1 formed on the indicator strain divided by PFU × ml−1 formed on the propagating strain. Data are means of at least three independent experiments.噬斑形成效率（efficiency of plating, EOP）：指指示菌株上形成的噬斑形成单位（plaque forming units, PFU）每毫升数与增殖菌株上形成的PFU每毫升数的比值。本数据为至少三次独立实验的均值。