A20 ll reaction contained 1 PCR buffer (Qiagen), 0.2 mM of each
dNTP, 0.5 lM of each primer, 1.2 U of HotStarTaqTM (Qiagen)
and 10–100 ng of genomic DNA. Cycling conditions were 95 C
for 15 min, followed by 38 cycles of 95 C for 30 s, 55 C for 60 s
and 72 C for 60 s, with a final extension of 72 C for 7 min. PCR
of ND5 fragments were performed using a primer pair MLF2
(50-TGGTGCAACTCCAAGCTAAA-30) and MNR4 (50-TCAGGCGTTRAGGTATGATG-
30).