Fig 9. Viable cell counts (CFU) of P. gingivalis W83 in the lungs of mice challenged with bacteria in the presence and absence of pyocyanin.

Mouse lungs were homogenized in PBS and 10-fold serial dilutions plated onto horse blood agar and incubated anaerobically. NS, not statistically significant. Pg, P. gingivalis alone; Pg+PCN, P. gingivalis plus 40 μg pyocyanin.