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The basis of GMS combination viruses.
| Serial number | Detailed glycosylated site added or deleted under WT background | Hemagglutinin titer (log2) | Virus titer(PFU/ml) |
|---|---|---|---|
| WT | (11G+, 123G+, 280G+, 287G+, and 295G+)a,b | 11 | 8.5 × 108 |
| R-30 | WT-87G+/295G− | 10 | 6.05 × 108 |
| R-31 | WT-87G+/280G−/295G− | 9 | 1.88 × 108 |
| R-32 | WT-280G−/295G− | 10 | 3.8 × 108 |
a Position numbers are according to H9 numbering. bThe WT protein originally contains four N-glycosylated sites, 11G+, 123G+, 280G+, 287G+, and 295G+.
