Agarose gel (2 %) electrophoresis of the products obtained in PCR experiments. DNA isolated from adult A. sidemi was used as a template. A limited dilution series from 1 ng/μl (line 1) to 0.1 pg/μl (line 5). A sample containing 0.1 pg/μl (line 5) was clearly visible on the original gel. Lane M, molecular size marker (100 bp DNA ladder, Fermentas).