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RSP2144 produces 19M-UFA in vivo. (A–C) Chromatograms of FAMEs accumulated in an E. coli ΔCfa mutant (JW1653) (A), an E. coli ΔCfa mutant containing E. coli cfa on a plasmid (B), and an E. coli ΔCfa mutant containing RSP2144 on a plasmid (C). The y and x axes show the relative abundance and retention time for each species, respectively.
