TDO2	Forward	5′-CAAATCCTCTGGGAGTTGGA-3′
	Reverse	5′-GTCCAAGGCTGTCATCGTCT-3′
18s RNA	Forward	5′-GATGGGCGGCGGAAAATAG-3′
	Reverse	5′-GCGTGGATTCTGCATAATGGT-3′
NDRG1	Forward	5′-TCAAGATGGCGGACTGTG-3′
	Reverse	5′-GAAGGCCTCAGCGAGCTT-3′