摘要: Genomes of pathogenic bacteria evolve by large-scale changes in gene inventory. The continual acquisition genomic islands, which refines their metabolic arsenal, is offset loss. Far from this being a passive deletion genes no longer useful to pathogens, the removal encoding problematic process and immunogenic surface antigens might be strongly beneficial. virulent eukaryotes show footprint similar alterations, including lateral transfer, genome degradation obligate pathogens. These common features suggest that unicellular pathogens share strategies for adaptation.