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.
Comparison of chemostat and biofilm commensalism in ampicillin-containing media. The log scale reduction of ampicillin-sensitive Sptr cells grown in coculture with Ampr cells was compared for chemostats (filled symbols) and biofilms (open symbols). Samples were taken from chemostats after three reactor volumes and from biofilms after 48 h. Cells were enumerated by dilution spread plating.
