Avian broilers were used as experimental objects to study the mechanism of the pituitary adrenal axis regulating immune system when being infected with virulent infectiousbursaldiseasevirus (IBDV).
An indirect hemagglutination assay (IHA) was set up using sheep erythrocytes sensitized with capsid protein VP2 of infectiousbursaldiseasevirus (IBDV) which were expressed in Escherichia coli.