Infectious bronchitis vaccines

Details Infectious bronchitis vaccines Infectious bronchitis vaccines

A - Human Necessities

61

K

167/130

A61K 39/215 (2006.01)

Patent

CA 1189450

ABSTRACT The present invention concerns novel 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.

420917

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