Figure 9From: Phylogenetic diversity and genotypic complexity of H1N1 subtype swine influenza viruses isolated in Mainland ChinaThe genotypes of H1N1 subtype swine influenza viruses in China mainland from 1992 to 2011. The eight gene segments (horizontal bars staring from the top) were PB2, PB1, PA, HA, NP, NA, M and NS genes, and were indicated in same color with representative viruses for each lineage.Back to article page