Search Results for: Birds
lymphocytes, as well as other white blood cells, like macrophages, heterophils, natural killer cells, or dendritic cells. the marek's and ibd viruses attack lymphocytes, subsequently suppressing aspects of the bird's immune functions. the bursa of fabricius is a unique, specialized immune organ in birds
virulent, virulent, very virulent, and very virulent+ categories. serotype 2 includes non-oncogenic field viruses. serotype 3 is the turkey herpesvirus, which is nonpathogenic in chickens. however, hvt is immune-stimulating and serves as the foundation of marek's vaccine in short lived, meat type birds...
https://www.bi-vetmedica.com/species/poultry/bird-health-diseases/immune-health.html