Figure 3

SimPlot analysis of variant strains CK/CH/GX/YL1301-1 and CK/CH/GD/LZ1401-1. The S1 gene from CK/CH/GX/YL1301-1 was a recombinant of the reference strains QXIBV and 4/91. The S1 gene from CK/CH/GD/LZ1401-1 was a recombinant of the reference strains PSH050513, 4/91, and YX10 after two recombination events. H120 was used as the outlier sequence. The y-axis gives the percent identity within a sliding window 200 bp wide centred on the position plotted, with a step size between plots of 20 bp.