Fig. (2) Conventional PCR Result. The products visualized by electrophoresis on ethidium bromide-stained 2% agarose gel. Lane M: low molecular weight marker DNA (100 bp MBI Fermentas) lane 1 contains the negative control, Lane 7 contains the BKV positive control. Lanes 2,3, 4 and 6 were negative samples, lane 5 shows a BKV positive band (176bp).