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This study was supported by U.S. Public Health Research grant AI 08831 and contract AI 52524 from the National Institute of Allergy and Infectious Diseases and is dedicated to Professor Werner Schäfer on the occasion of his 65th birthday
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Webster, R.G., Hinshaw, V.S. & Bean, W.J. Antigenic shift in myxoviruses. Med Microbiol Immunol 164, 57–68 (1977). https://doi.org/10.1007/BF02121302
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DOI: https://doi.org/10.1007/BF02121302