The patterns and conservation of potential glycosylation sites on HA in different type of A/H1N1 influenza viruses.

The human seasonal H1N1 viruses were separated into eight groups according to their glycosylation site patterns. The conservation of potential glycosylation sites was shown as percentage (‘%’ had been omitted) and the glycosylation site alteration was highlighted in bold. The numbers of corresponding strains used for the analysis were given in the brackets.