Distribution of genes in different functional categories for the five tested strains. The y axis shows the percentage of genes relative to the total number of genes in each category. Gray, present genes; white, partially present genes; black, absent genes. Br, L. interrogans serovar Bratislava; Ca, L. interrogans serovar Canicola; He, L. interrogans serovar Hebdomadis; Gr, L. kirschneri serovar Grippotyphosa; Cy, L. kirschneri serovar Cynopteri.