> Lee M-S, Chen JS-E. Predicting antigenic variants of influenza A/H3N2
> viruses. Emerg Infect Dis. 2004:10;1385-90.
>
> **Appendix. Amino acid positions compared in this study^a,b^**

  ------------------------------------------------------------------------------------
  aa    Antigenic   MAb-20   PS-18   D-32   aa     Antigenic   MAb-20   PS-18   D-32
        sites                                      sites                        
  ----- ----------- -------- ------- ------ ------ ----------- -------- ------- ------
  2                                  X      172    D                            X

  3                                  X      173    D                            

  5                                  X      174    D                            

  31                                 X      175    D                            

  44    C                                   176    D                            

  45    C                                   177    D                            

  46    C                                   179    D                            

  47    C                                   182    D                            

  48    C                                   186    B                    X       

  50    C                                   187    B                            

  51    C                                   188    B           X                

  53    C           X                       189    B           X                X

  54    C                                   190    B                    X       X

  57    E                                   192    B                            

  59    E                                   193    B           X        X       X

  62    E           X                X      194    B                    X       

  63    E           X                       196    B                            X

  67    E                                   197    B                    X       X

  75    E                                   198    B           X                

  78    E                                   201    D                    X       

  80    E                                   203    D                            

  81    E                                   205                X                

  82    E                                   207    D                            

  83    E                            X      208    D                            

  86    E                                   209    D                            

  87    E                                   212    D                            

  88    E                                   213    D                            

  91    E                                   214    D                            

  92    E                                   215    D                            

  94    E                                   216    D                            

  96    D                                   217    D                            

  102   D                                   218    D           X                

  103   D                                   219    D                            

  109   E                                   220                                 X

  112                                X      226    D                    X       X

  117   D                                   227    D                            

  121   D                    X       X      228    D                            

  122   A                                   229    D                            

  124   A                    X       X      230    D                            

  126   A                                   238    D                            

  128   B                                   240    D                            

  129   B                                   242    D                            

  130   A                                   244    D                            

  131   A                            X      246    D                            

  132   A                                   247    D                            

  133   A           X        X       X      248    D                            

  135   A           X        X       X      260    E                            

  137   A                                   261    E                            

  138   A                    X              262    E                    X       X

  140   A                                   265    E                            

  142   A           X        X       X      271                                 X

  143   A           X                       273    C                            

  144   A           X                X      275    C                    X       X

  145   A           X        X       X      276    C                            X

  146   A           X                       278    C                            X

  150   A                                   279    C                            

  152   A                                   280    C                            

  155   B                                   294    C                            

  156   B           X        X       X      297    C                            

  157   B           X                X      299    C                            X

  158   B           X        X       X      300    C                            

  159   B                                   304    C                            

  160   B                                   305    C                            

  163   B                                   307    C                            

  164   B                                   308    C                            

  165   B           X                       309    C                            

  167   D                                   310    C                            

  168   A                                   311    C                            

  170   D                                   312    C                            

  171   D                                                                       
  ------------------------------------------------------------------------------------

> ^a^aa, amino acid; MAb, monoclonal antibody.
>
> ^b^Among the 329 amino acid residues in the HA1 polypeptide, 131, 20,
> 18, and 32 amino acid positions have been identified as in the five
> antigenic sites (A, B, C, D, E), the mouse monoclonal antibody-binding
> sites (MAb-20), the positively selected codons (PS-18), and the codons
> with substantial diversity (D-32), respectively.