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Ehrhardt, D W., E M. Atkinson, K F. Faull, D I. Freedberg, D P. Sutherlin, R. Armstrong, and S R. Long. In Vitro Sulfotransferase Activity of NodH, a Nodulation Protein of Rhizobium Meliloti Required for Host-specific Nodulation. 1995.

Ehrhardt, D W., et al. In Vitro Sulfotransferase Activity of NodH, a Nodulation Protein of Rhizobium Meliloti Required for Host-specific Nodulation. 1995.