Table 2. Sequences of primers used in this study.

Primers	Sequence (5′ – 3′)	Accession Number	PCR product (bp)
Beta-actin-F	GAGGCGTACAGGGATAGCA	NM_001101.3	302
Beta-actin-R	GTGGGCATGGGTCAGAAG
ABCG2-F	GAGCTCGTCCCCTGGATGT	NM_004827.2	186
ABCG2-R	CGGAACCTTTTGAGTGGGCA
Connexin43-F	CAAAATCGAATGGGGCAGGC	NM_000165.3	136
Connexin43-R	GCTGGTCCACAATGGCTAGT
K12-F	CTCGCAGAGTGTGATAGGCA	NM_000223.3	146
K12-R	CCCCAAAGCCGGAACTAGAA

Abbreviations: F, forward primer; R, reverse primer; PCR, polymerase chain reaction.