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Determination of phosphatase activities (nmol of p-nitrophenol produced per min and mg of protein) in M. xanthus strains DZF1 (solid lines) and JM12 (dashed lines) on MCM starvation medium. Results for Mg-independent acid (a), neutral (b), and alkaline (c) phosphatases at different times of development are shown. The error bars indicate standard deviations.
