LACK OF CORRELATION BETWEEN INFECTIVITY, SEROLOGIC RESPONSE AND CHALLENGE RESULTS IN IMMUNIZATION WITH AN AVIAN INFECTIOUS BRONCHITIS VACCINE.
D000486:Allergy and Immunology; D000818:Animals; D001991:Bronchitis; D018352:Coronavirus Infections; D007114:Immunization; D011200:Poultry; D014611:Vaccination; D014765:Viral Vaccines; D014780:Viruses
D014765:Viral Vaccines
BRONCHITIS; IMMUNOLOGY; POULTRY; VACCINATION; VERTEBRATE VIRUSES; VIRAL VACCINES