FIG. 1.
Schematic representation of the deletions in the lsr region of several Photorhabdus and Xenorhabdus strains. Horizontal arrows represent primers designed for the long-range PCR analysis of the locus and for sequencing. Gray and hatched arrows or boxes symbolize, respectively, open reading frames and their remnants. Insertion of ERIC elements and a 27-nucleotide region (*) are represented.