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Physical map of the pilA locus for E. corrodens VA1-S1. Shaded boxes indicate size and orientation of ORFs as determined by sequence analysis. Flanking and internal restriction sites are shown for enzymes used in cloning and generation of probes. Labeled horizontal bars below map identify regions that correspond to probes used in DNA and RNA hybridization analyses. B, BglII; E, EcoRI; P, PvuII.
