| http://www.w3.org/ns/prov#value | - Thus, the present invention includes nucleic acid molecules that are useful as primers for use in PCR amplification procedures specific for the amplification of at least one mRNA or DNA encoding a modulator of exopolysaccharide biosynthesis, particularly in samples derived from Sphingomonas or Xanthomonas (for PCR procedures see, e.g., U.S. Pat. No. 4,683,195; U.S. Pat. No. 4,965,188; and Innis et
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