title: INVESTIGATIONS ON THE VARIABILITY OF THE PATHOGENICITY OF NEWCASTLE DISEASE VIRUS (NDV). IV. INFLUENCE OF BACTERIAL INFECTION (PASTEURELLA MULTOCIDA) AND PARASITIC INVASION (ASCARIDIA GALLI).
mesh_terms: D000818:Animals; D001196:Ascariasis; D001197:Ascaridia; D001424:Bacterial Infections; D002642:Chick Embryo; D006385:Hemagglutination Inhibition Tests; D009521:Newcastle Disease; D009522:Newcastle disease virus; D010326:Pasteurella Infections; D016979:Pasteurella multocida; D011200:Poultry; D011201:Poultry Diseases; D012106:Research; D014774:Virulence
keywords: ASCARIASIS; CHICK EMBRYO; EXPERIMENTAL LAB STUDY; HEMAGGLUTINATION INHIBITION TESTS; NEWCASTLE DISEASE; NEWCASTLE DISEASE VIRUS; PASTEURELLA INFECTIONS; POULTRY; POULTRY DISEASES