Fig. 4From: Extensive genome analysis of Coxiella burnetii reveals limited evolution within genomic groupsGene frequency plots after BPGA pan-genome subset analysis using genomic group associations. Proteins annotated using PROKKA were used as input files. The protein similarity threshold for protein clustering was 90%. The bars furthest to the right in each graph represent conserved core-genes; the bars furthest to the left in each graph represent unique genes. The number of core genes is indicated within each figureBack to article page