Table I.

Sequence of the primers used for reverse transcription quantitative PCR.

Gene	Primer sequences	Products
MDR1		259 bp
Sense	5′-GAATCTGGAGGAAGACATGACC-3′
Antisense	5′- TCCAATTTTGTCACCAATTCC −3′
MRP1		353 bp
Sense	5′-CTGACAAGCTAGACCATGAATGT-3′
Antisense	5′-TCACACCAAGCCGGCGTCTTT −3
MRP5		481 bp
Sense	5′-GCTGTTCAGTGGCACTGTCAG-3′
Antisense	5′-TCAGCCCTTGACAGCGACCTT −3′
GAPDH		216 bp
Sense	5′-AACGGATTTGGTCGTATTGGG-3′
Antisense	5′-TCGCTCCTGGAAGATGGTGAT-3′

MDR1, multidrug resistance gene 1.