| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 07.00 |
| PATENT ASSIGNEE | Aviron |
| PATENT CLAIMS | Recombinant influenza virus in which the AA seq comprising the PB2 protein has been modified by substitution of at least one non-native AA for native tryptophan residue that affects cap binding activity of PB2 in the region spanning AA residues 537 through 575 |
| PATENT PHOTOCOPY | Available on request |
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