TY - GEN AU - Shih,Arthur Chun-Chieh AU - Hsiao,Tzu-Chang AU - Ho,Mei-Shang AU - Li,Wen-Hsiung TI - Simultaneous amino acid substitutions at antigenic sites drive influenza A hemagglutinin evolution SN - 0027-8424 PY - 2007///1017 KW - Amino Acid Substitution KW - genetics KW - Antigenic Variation KW - Computational Biology KW - Evolution, Molecular KW - Hemagglutinins KW - Influenza A virus KW - Selection, Genetic N1 - Publication Type: Comparative Study; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't UR - https://doi.org/10.1073/pnas.0701396104 ER -