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method for the production of live or inactivated vaccines against infectious bronchitis
method for the production of live or inactivated vaccines against infectious bronchitis
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机译:生产针对传染性支气管炎的活疫苗或灭活疫苗的方法
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摘要
The present invention concerns infectious bronchitis vaccines derived from infectious bronchitis viruses which spontaneously hemagglutinate chicken erythrocytes, and processes for the preparation thereof, novel infectious bronchitis virus strains which spontaneously hemagglutinate chicken erythrocytes, and a method for immunization of egg-laying birds against infectious bronchitis.
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