Venn diagram depicting the number of core genes in segregated groups of <i>C</i>. <i>bovis</i> isolates.

All genomes, the number of genes composing the core genome of all 21 isolates; Humans/Cows, the number of genes of the core genome of the C. bovis isolates obtained from humans and cows, which were absent in one or more of the C. bovis isolates obtained from rodents; Rodents, the number of genes of the core genome of the C. bovis isolates obtained from mice and a rat, which were absent in one or more of the C. bovis isolates obtained from humans or cows.