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Physical and genetic map of the 9,618-bp sequence of S. suis DAT1 with the putative genes indicated. Shaded and solid arrows, ORFs of the SsuDAT1I genes and pur genes, respectively. Horizontal solid lines, positions of the cloned fragments of plasmids pDAM3, pDAM4, pDAM7, pDAM9, and pDAM10; striped bar, region amplified by an inverse PCR; shaded and solid double-headed arrows, average G+C content of the SsuDAT1I region and that of the pur region, respectively.
