A comparative study of single and multiple respiratory infections in the chicken: single infections (with Mycoplasma gallisepticum and Newcastle disease virus).
D000818:Animals; D005455:Fluorescent Antibody Technique; D006385:Hemagglutination Inhibition Tests; D008168:Lung / Q000473:pathology; D009174:Mycoplasma; D009500:Neutralization Tests; D009521:Newcastle Disease / Q000209:etiology*; D011201:Poultry Diseases / Q000209:etiology*; D012141:Respiratory Tract Infections / Q000209:etiology / Q000662:veterinary*; D014132:Trachea / Q000473:pathology