Table 1. Primer sequences.

Type	Primer name	Sequences
Human	MDR1	Forward	5′-CCC ATC ATT GCA ATA GCA GG-3′
		Reverse	5′-GTT CAA ACT TCT GCT CCT GA-3′
Human	MRP1	Forward	5′-GCC GAA GGA GAG ATC ATC-3′
		Reverse	5′-AAC CCG AAA ACA AAA CAG G-3′
Human	MRP2	Forward	5′-CGA CCC TTT CAA CAA CTA CTC-3′
		Reverse	5′-CAC CAG CCT CTG TCA CTT C-3′
Human	MRP3	Forward	5′-GTG GGG ATC AGA CAG AGA T-3′
		Reverse	5′-TAT CGG CAT CAC TGT AAA CA-3′
Human	MRP4	Forward	5′-GCT CAG GTT GCC TAT GTG CT-3′
		Reverse	5′-CGG TTA CAT TTC CTC CTC CA-3′
Human	MRP5	Forward	5′-CAG CCA GTC CTC ACA TCA-3′
		Reverse	5′-GAA GCC CTC TTG TCT TTT TT-3′
Human	MRP6	Forward	5′-AGG AGG CCC GAG CTT AGA C-3′
		Reverse	5′-CCT GCC CTA TTG GAT GCT GT-3′
Human	MRP9	Forward	5′-ATG CGG TTG TCA CTG AAG-3′
		Reverse	5′-GTT GCC TCA TCC ATA ATA AGA AT-3′
Human	GAPDH	Forward	5′-CGT CTT CAC CAC CAT GGA GA-3′
		Reverse	5′-CGG CCA TCA CGC CAC AGT TT-3′

RT-PCR was performed by coamplification of the genes with a reference gene by use of the cDNA template and corresponding gene-specific primer sets