Pathological lesions in chicken organs after infection with turkey herpesvirus THV-BIO-I

animal tissues antibodies anticorps anticuerpos bazo bolsa de fabricio bourse de fabricius bursa fabricii chickens enfermedad de marek feathers inoculation inoculation methods lymphatic system maladie de marek peso plumas plume poids pollo poulet rate sistema linfatico spleen tejidos animales tissu animal vaccin vaccines vacuna weight