Fig. 4.

Escherichia coli growth inhibition assays. (a) E. coli strain K88 in the mid-logarithmic phase was incubated with the medium (control) or with abaecin and hymenoptaecin, alone or in combination. (b) E. coli strain K88 in the mid-logarithmic phase was incubated with the medium (control) or with abaecin and cecropin A, alone or in combination. The growth rate was determined by measuring the optical density of the culture at 600 nm.