Figure 5From: Phylogenetic classification of Escherichia coliO157:H7 strains of human and bovine origin using a novel set of nucleotide polymorphismsNumber of strains and PFGE patterns per genotype. Each stacked bar represents a total of the number of strains per genotype and the number of different PFGE patterns observed per genotype. The black portion of the bars represents the number of strains per genotype. The white speckled portions of the bars represent the number of different PFGE patterns observed per genotype.Back to article page