... 5'-GGGTCGACGCGTTTGAGCAAAAGCAGGAGTGAAAAT, complementary to nucleotides 1–21 at the 3' end of viral RNA (bolded) preceded by a T3 promoter sequence, and 5'-CGGAATTCATTAACCCTCACTAAAAGTAGAAACAAGGAG for ... human H3N2 viruses to grow in the presence of an NA inhibitor, is not accompanied by changes in HA and appears to be a new mechanism of resistance to NA inhibitors; lack of requirement for NA activity ... Kaverin NV, Gambaryan AS, Bovin NV, Rudneva IA, Shilov AA, Khodova OM, Varich NL, Sinitsin BV, Makarova NV, Kropotkina EA: Postreassortment changes in influenza A virus hemagglutinin restoring HA-NA...