Time-dependent changes in the metabolic profile of incubations with 4-fluorophenol (A and D), 2,4-difluorophenol (B and E), and 2,3,4-trifluorophenol (C and F), where panels A to C show the profiles of incubations with cell extracts and panels D to F show the profiles of incubations with whole cells of E. jeanselmei. Metabolites were identified and quantified by 19F NMR. 4FOH, 4-fluorophenol; 4Fcat, 4-fluorocatechol; 3Fmuc, 3-fluoromuconate; F−, fluorine.