“…cDNA was synthesized by incubating RNA at 25℃ for 10 min, at 48℃ for 30 min, and then at 95℃ for 5 min with the SUPERSCRIPT reverse transcriptase (Invitrogen, Carlsbad, CA, USA) in a PTC-100 thermal cycler (MJ Research, Inc. Watertown MA, USA). HDC real time PCR primers included the following: sense, 5'-GCA GCA AGG AAG AAC AAA ATC C-3'; antisense, 5'-CAA CAA GAC GAG CGT TCA GAG A-3'; probe, FAM-AAA GCG CAT GAG CCC AAT GCT GAT-TAMRA (31,32). These were purchased from Bioneer (Daedockgu, Daejeon South Korea).…”