PCR products were analysed on gels of 2% agarose with the
MBI Fermentas (Amherst, New York, USA) 100 bp DNA
Ladder Plus used as a size marker. PCR products were
sequenced with AmpliTaq DNA polymerase FS with a
model 373 DNA Sequencer Applied Biosystems (Foster
City, CA, USA). Figures were prepared with Adobe
Photoshop 5Æ5.