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Characterization of viruses with unusual RFLP patterns
| Virus designation | Subtype | Gene | Mutation making amplicon untypeable |
|---|---|---|---|
| A/Russia/01/98 | H1N1 | M | T to G |
| A/Paris/0453/97 | H3N2 | NP | C to T |
| A/Caen/1273/98 | H1N1 | PB1 | G to A |
| A/Hong Kong/523/97 | H3N2 | PA | C to A |
| A/Hong Kong/546/97 | H3N2 | PA | C to A |
| A/Singapore/21/97 | H3N2 | PA | C to A |
