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. 2008 Mar 21;74(10):3130–3137. doi: 10.1128/AEM.02732-07

FIG. 2.

FIG. 2.

Current generation (normalized to the anode surface area) as a function of time for eight sequential 10-fold dilutions (10−1 to 10−8) in eight U-tube MFC reactors using 1 g/liter acetate as the sole electron donor for the first cycle of dilution-to-extinction exoelectrogenic isolation of bacteria. A sterile U-tube system was used as an uninoculated control.