Mutations in influenza A HYR seed viruses used in vaccine preparation.
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Silent changes are in regular font; Coding changes are in bold font with corresponding aa changes in the parentheses.aHYRs prepared in E.D. Kilbourne laboratory.bHYRs prepared in Bucher laboratory at NYMC.X-157 was a mixture of two populations of HYRs, one with c PR8 PB1 and a second with d NY/04 PB1.
创建时间：
2015-12-02
