Figure 4.

Two-way hierarchical clustering analysis of the five selected serotypes. The color histogram shows the proportions of the bands present at every designated band location with values ranging from 0 to 1. The hierarchical cluster analysis was applied based on the dissimilarity measures of any two serotypes calculated by the Euclidean distance of the characteristic parameters. Both serotypes and band locations were clustered according to dissimilarity measures. Red asterisks indicated the distinguished band markers.