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Uptake of [14C]phenanthrene by cells of Mycobacterium sp. strain RJGII-135 grown on acetate (A) or phenanthrene (B). Cells were incubated with 0.06 μM radiolabeled phenanthrene alone and with 0.06 μM radiolabeled phenanthrene plus 0.15, 0.5, or 5.5 μM nonlabeled phenanthrene. The error bars (where visible) represent 1 SD, based on three independent experiments.
