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Sequence alignment of the recA coding region of pathogen-specific primers. The dotted lines represent 156-bp intervening sequences; the dashes represent bases identical to those of the three-pathogen consensus; the question marks represent unknown nucleotides. BP, B. pertussis; BPP, B. parapertussis; BB, B. bronchiseptica; BHI, B. hinzii; BHO, B. holmesii; BAV, B. avium.
