FIG. 2.

Time-kill curves of S. mutans in 80% saliva (A) and A. actinomycetemcomitans in 5% serum (B) by hBD-3, chlorhexidine (chlor), amoxicillin (amox), and metronidazole (metro). The concentrations of hBD-3 and the antimicrobial agents reported are micromolar. CTRL, bacteria incubated in the absence of hBD-3 or antimicrobial agents but containing the appropriate amount of the corresponding solvents (0.1% acetic acid for hBD-3 and distilled water for the antimicrobial agents). Data are means ± standard deviations of three independent experiments.