| CB | Bachelor of Surgery [Lat. Chirurgiae Baccalaureus]; calcium blocker; carbenicillin; carotid body; ch... |
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| CBA | chronic bronchitis and asthma; cost-benefit analysis |
| COB | chronic obstructive bronchitis; coordination of benefits |
| IB | idiopathic blepharospasm; immune body; inclusion body; index of body build; infectious bronchitis; I... |
| infectious bronchitis virus | An RNA virus of the family Coronaviridae and the type species of the genus Coronavirus, causing infectious avian bronchitis, being most pathogenic in chicks up to about 4 weeks of age; not to be confused with avian infectious laryngotracheitis virus. (05 Mar 2000) |
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| infectious bronchitis virus, avian | A species of coronavirus causing infections in chickens and possibly pheasants. Chicks up to 4 weeks old are the most severely affected. (12 Dec 1998) |
| fibrinous bronchitis | Inflammation of the bronchial mucous membrane, accompanied by a fibrinous exudation, which often forms a cast of the bronchial tree with severe obstruction of air flow. Synonym: plastic bronchitis, pseudomembranous bronchitis. (05 Mar 2000) |