Representatives of each ARDRA pattern group were randomly
chosen for sequence analysis. DNA sequence analysis was performed
according to the dideoxy-mediated chain termination method
(Sanger et al., 1977) using a MegaBACE 1000 automated DNA
sequencer (Pharmacia Biotech, Sweden) at the special DNA sequencing
laboratory of the Department of Biochemistry, Faculty of Medicine,
Khon Kaen University. Homology searches of the 16S rDNA sequences
were performed in the GenBank with the Blastn program.