title: Use of conditionally counterselectable suicide vectors for allelic exchange.
authors.affiliation: Division of Bacterial Products, Food and Drug Administration, Bethesda, Maryland 20892.
authors.forename: S
authors.initials: S
authors.lastname: Stibitz
mesh_terms: D000483:Alleles; D001419:Bacteria / Q000235:genetics*; D001483:Base Sequence; D001886:Bordetella pertussis / Q000235:genetics / Q000472:pathogenicity; D004269:DNA, Bacterial / Q000235:genetics; D005822:Genetic Vectors; D007613:Kanamycin Resistance; D008969:Molecular Sequence Data; D010957:Plasmids / Q000235:genetics; D011995:Recombination, Genetic; D014774:Virulence
chemical_list: D004269:DNA, Bacterial