2. Materials and methods
DNA from 350 anonymous Swedish blood donors was
extracted from peripheral blood lymphocytes using a salting out
procedure [20]. The HVI and HVII regions in these samples
were previously analysed using Sanger sequencing in these
samples. As a consequence of the rCRS HVI/HVII sequence
being a common mtDNAvariant in Caucasians, this sequence is
often observed in criminal cases when sequences from different
individuals are unresolved.