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Other selected H9N2 isolates from 1977 to 1999 were assessed on the glycan microarray as previously described [49]. Shown are results for Dk/HK/149/77, an isolate with Gln226 (Q), and three later isolates with Leu226 (L) Dk/Y280/97, Hu/HK/1073/99, and Qa/HK/NT16/99. Viruses were analyzed at a hemagglutination titer of 256 or 128 (Hu/HK/1073/99). L and Q correspond to Leu226 and Gln226, respectively in the HA RBS.
