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Rearrangement of the ess locus in patient 53 blood and nares strains. Matching ess regions in the nares (top) and blood (bottom) strains of patient 35 are indicated by shaded areas (gray) and connecting lines. The 4-kb inserted element and candidate regions for homologous recombination are highlighted by a horizontal line and yellow shading, respectively. Gene colors correspond to the type of encoded proteins, according to the key at the bottom.
