virus (3) volaille (3) analyse (3) embryon (3) Control (3) Origin (3) Vaccines (3) Poultry (3) Analysis (3) Origin (3) information (2) acide aminé (2) champ (2) comparaison (2) Comparison (2) Genes (2) Viruses (2) Symptoms (2) Evidence (2) Regions (2) Provinces (2) Viruses (2) Transmission (2) Positions (2) puits (1) tissu (corporel) (1) temps (durée) (1) voie respiratoire (1) maladie respiratoire (1) domaine public (1)