title: A soluble antigen of infectious bronchitis virus.
mesh_terms: D000818:Animals; D000941:Antigens / Q000032:analysis* / Q000302:isolation & purification; D001991:Bronchitis / Q000382:microbiology / Q000662:veterinary*; D002499:Centrifugation, Density Gradient; D002642:Chick Embryo; D003851:Deoxyribonucleases / Q000494:pharmacology; D005321:Extraembryonic Membranes / Q000276:immunology; D005779:Immunodiffusion; D011201:Poultry Diseases / Q000382:microbiology*; D012328:RNA Viruses / Q000276:immunology*; D012260:Ribonucleases / Q000494:pharmacology; D012995:Solubility; D013696:Temperature; D014357:Trypsin / Q000494:pharmacology
chemical_list: D000941:Antigens; D003851:Deoxyribonucleases; D012260:Ribonucleases; D014357:Trypsin