Figure 4From: Comparative genomics of prevaccination and modern Bordetella pertussis strainsPolymorphisms which distinguish strains isolated before (pre) and after (post) the introduction of vaccination. Within rows, polymorphisms are distinguished by color. Genes truncated in all strains were omitted. An overview of alleles is given in Additional file 6. Abbreviation: indel, insertion/deletion. Ps, pseudogene. References [16, 28, 55–57, 59].Back to article page