Fig. 5

Network analysis based on shared genes. Connectivity between strains indicates the presence of common gene families. Percentage thresholds depicted are 26% (a), 27% (b), 29% (c), and 34% (d). The percentage of shared genes is based on the number of genes shared by two genomes divided by the maximum number of genes found in the genome. Colors indicate the following strains: blue – Salmonella, orange – Citrobacter, red – Citrobacter strains S646, S647, S648, S1285, green – Citrobacter strain S1284