Figure 1From: Novel genetic reassortants in H9N2 influenza A viruses and their diverse pathogenicity to miceGenotypes of H9N2 influenza viruses isolated from chickens in northern China. The seven different genotypes are designated B0, G2, B62, B63, B55, B64 and B65. The eight horizontal bars in ovals represent eight gene segments of AIV (from top to bottom): PB2, PB1, PA, HA, NP, NA, M, and NS. Each color represents a virus lineage. "?", displays an unknown source lineage.Back to article page