TABLE 2.

Inhibition of mobility of isolates by PQ

TreatmentMotility of isolatesa
Time (min)PQ concn (μM)SB1SB2SB4SB6SB8SB10SB11SB13SB14SB15SB18DC
15100++++++++++++++++++++++++
10++++++++
1+
Controlb
60100++++++++++++++++++++++++
10+++++++++++++++
1++++
Controlb
  • a Motility was qualitatively scored by dark-field microscopy. −, no noticeable change in motility; +, 25 to 50% decrease in motility; ++, > 50% decrease in motility.

  • b The control contained 0.08% ethanol. PQ concentrations of 1, 10, and 100 nM were also tested but had no effect.