Circular genomes representation map and genome comparison of S . Typhi (CT18, Ty2, P-stx-12, BL196, CR0044, ST0208). The circle is divided into arcs representing the sequence of the chromosomes of all six genomes as labeled. The inner ring shows the coordinates in scale and total genomes size of the reference sequence, CT18 in scale (mbp), with black histogram bar representing GC content and purple-green histogram bar representing GC deviation. Orthologs for each genomes with respect to CT18 (innermost red arch) are showed in order (inside-out) with the percentage of similarity based on nucleotide sequences (100%, 70% and 50%, colour tone from darkest to lightest) as indicated on the legend located at the right of the figure. The outermost arch in red represents the location of SPI1 to SPI10 in relative to CT18 and labeled in red. The position of the genes related to pathogenicity and host persistent are shown and labeled in blue at the edge of the rings.