FIG. 3.

Protective effects of the B. anthracis UM23-Cl2 culture supernatant on B. subtilis 168 in the presence of LL-37. The culture supernatant from overnight cultures was filtered, while the bacterial cells were washed three times in sterile medium before being resuspended in the filtered culture supernatant. B. subtilis resuspended in B. subtilis culture supernatant (▪); B. subtilis resuspended in B. anthracis culture supernatant (⧫). Each experiment was performed at least three times; the error bars represent the standard deviations calculated from the mean values.