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Relationship between the electrophoretic mobilities of phlD fragments and their G+C contents. The electrophoretic mobilities of 350-bp phlD fragments in a denaturing gradient gel (32 to 41% denaturant) are shown for various strains and isolates representing nine different DGGE groups. For three DGGE groups (DGGE groups A, B, and E), multiple isolates were included in the analysis.
