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Uptake of alanine by strains of R. leguminosarum. Uptake of 500 μM (0.125 μCi) l-[U-14C] alanine was assayed by the rapid filtration method for different R. leguminosarum strains grown in minimal medium (AMS) with added glucose (10 mM) plus ammonium chloride (10 mM) (white bars) or alanine (20 mM) (black bars). Data shown are the means of three independent experiments.
