Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
PQS bioassay with synthetic or natural PQS. Synthetic PQS (open squares), natural PQS (closed squares), 2-hydroxy-3-heptyl-4-quinolone (circles), or 2-heptyl-4-hydroxy-quinoline-N-oxide (triangles) were added to bioassay cultures at the indicated concentrations. Data represent the means of duplicate assays performed during three separate experiments and are presented as β-gal activity in Miller units +/− SDn−1.
