Effects of various drug concentrations on the in vitro growth of B. suis in minimal medium. The experiments were performed as described in the legend to Fig. 2, except that B. suis was incubated for 96 h without or with final concentrations of 25, 50, and 100 μM of inhibitors 5c, 5d, 5e, and 5n. One representative experiment out of three is shown.