Vaccination and Protection of Pigs Against Pleuropneumonia With a Vaccine Strain of Actinobacillus pleuropneumoniaeProduced by Site-Specific Mutagenesis of the ApxII Operon
Infection and Immunity - United States
doi 10.1128/.67.4.1962-1966.1999
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Date
January 1, 1999
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American Society for Microbiology