PCR amplification of *3 was performed simultaneously in a buffer containing genomic DNA, 1.25 U TaKaRa Ex Taq (Takara Bio Inc., Shiga, Japan), 10× EX Taq Buffer and 0.2 mM dNTPs with 0.5 μM of each primer (5'-CAT AGGTAAGATATTACTTAAA-3' and 5'-CCAAAGTAC TTTATAGAAAC-3'). PCR...