Table I.

Reagents used in the study.

Reagent	Supplier
Total RNA extraction reagent, TRIzol	Invitrogen Life Technologies, Carlsbad, CA, USA
Agarose (1.5%)	BioWest, Barcelona, Spain
2X Power Taq PCR MasterMix	BioTeke Corporation, Beijing, China
Primers Sangon	Biotech Co., Ltd., Shanghai, China
ReverTra Ace-α-® cDNA kit	Toyobo Co., Ltd., Osaka, Japan
DEPC water	Beyotime Institute of Biotechnology, Haimen, China
Multi-functional DNA Gel Extraction kit II (Spin-Column)	BioTeke Corporation, Beijing, China
Realtime PCR Master Mix	Toyobo Co., Ltd., Osaka, Japan