Fig. 3

The heatmap of the presence or absence of the genes of the pks island filter from the 171 pks+E. coli isolates. The red color of the isolates name indicates the isolates from UC patients. The method of heatmap clustering is based on the complete Euclidean distance. The pks island genes of clbA, clbD, clbE, clbF, clbG, clbP, clbR, clbQ, two hypothetical protein genes, IS1400 and IS1351were presented in all 171 strains