Figure 7From: Monitoring the prevalence of viable and dead cariogenic bacteria in oral specimens and in vitro biofilms by qPCR combined with propidium monoazideMonitoring the ratio of viable cell number to total cell number for S. mutans in (A) planktonic cells and (B) biofilms, by PMA-qPCR. Both planktonic cells and biofilms were treated with 0–0.003% H2O2 for 24 h. The mean ± S.D. values of independent triplicate data are shown. *p < 0.05, **p < 0.01.Back to article page