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Alignment of deduced amino acid sequences from hemagglutinin genes of CDV strains. Only amino acids that differ from the majority sequence are shown. Identical residues are shown by dots. Potential N-linked glycosylation sites (N-X-S/T) are shaded. Cysteine (▾) and proline (▪) residues are indicated. The predicted amino acid sequences of case 21261 were identical to those shown for case 18133. Chn, China; Dnk, Denmark.
