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Evaluation of the protection conferred by commercial vaccines against the California 99 isolate of infectious bronchitis virus |
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| Authors: | Alvarado I R Villegas P El-Attrache J Brown T P |
| Affiliation: | Department of Avian Medicine, University of Georgia, College of Veterinary Medicine, Athens, GA 30602-4875, USA. |
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| 本文献已被 PubMed 等数据库收录！ | |