Figure 6.

Cytotoxicities and antibacterial activities of purified and synthetic melittin. (A) Cell viabilities were determined using a Cell Counting Kit-8. ^*P<0.01. Data are presented as the mean ± standard deviation. (B) To examine the antimicrobial activities against USA300, the indicated concentrations of purified and synthetic melittin were incubated for 1 h at room temperature with 100 µl bacterial suspensions in phosphate-buffered saline. Cell viabilities were determined by plating of serial dilutions and colony counting following incubation for 24 h.