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Biodegradation of lower concentrations of 1,2-DCA and/or EDB that are typical of leaded-gasoline spills in enrichment cultures grown with 1,2-DCA (a) or EDB (b) as the terminal electron acceptor. Triplicate bottles (numbered 1, 2, and 3) are shown for each treatment. Arrows indicate the addition of 0.25 mmol lactate.
