Figure 4From: 6-sulfo sialyl Lewis X is the common receptor determinant recognized by H5, H6, H7 and H9 influenza viruses of terrestrial poultryPartial HA amino acid sequences of H9N2 viruses. The sequences were obtained from GenBank. Differences with respect to the top sequence are shown. Amino acids in positions 190, 222, and 226 are highlighted. The figure was generated with GeneDoc 2.6 software [50].Back to article page