Table 1.

Gene-Specific Polymerase Chain Reaction Primers

Gene	Forward primer	Reverse primer
MDR1	5′-CAGACAGCAGGAAATGAAGTTGAA-3′	5′-TGAAGACATTTCCAAGGCATCA-3′
MRP2	5′-TGCAGCCTCCATAACCATGAG-3′	5′-GATGCCTGCCATTGGACCTA-3′
BCRP	5′-CAGGTCTGTTGGTCAATCTCACA-3′	5′-TCCATATCGTGGAATGCTGAAG-3′
GAPDH	5′ CGAGATCCCTCCAAAATCAA 3′	5′-TTCACACCCATGGACGAACAT 3′

BCRP, breast cancer resistance protein; GAPDH, glyceraldehyde 3-phosphate dehydrogenase; MDR1, P-glycoprotein; MRP2, multidrug resistance protein.