About the Authors
Avian Infectious Disease Programme, Institute for Animal Health, Compton, Berkshire, United Kingdom
Department of Zoology, University of Oxford, Oxford, United Kingdom
The authors have declared that no competing interests exist.
Conceived and designed the experiments: WNM VN ALS. Performed the experiments: WNM LPS SJB. Analyzed the data: WNM LPS SJB VN ALS. Contributed reagents/materials/analysis tools: LPS SJB RKB VN ALS. Wrote the paper: WNM VN ALS. Codeveloped the avian repertoire analysis system: WNM RKB ALS.