Effect of 25 μM PMA on heat-killed bacteria as assessed by qPCR. Serially diluted chromosomal DNA from live cells and live cells spiked with heat-killed cells of (A) S. mutans and (B) S. sobrinus. Dead cells (+), S. mutans/S. sobrinus DNA with DNA from dead S. mutans/S. sobrinus. Dead cells (−), S. mutans/S. sobrinus DNA only. All experiments were performed independently three times.
Yasunaga et al. BMC Microbiology 2013 13:157 doi:10.1186/1471-2180-13-157