Table 1.

Primer sequence.

Primer	Sequence (5′-3′)
claudin-1 forward	GTGGATGTCCTGCGTGTC
claudin-1 reverse	GTGTTGGGTAAGATGT TGTTTT
claudin-4 forward	TTCATCGGCAGCAACAT
claudin-4 reverse	AGGACACGGGCACCAT
Occludin forward	ATCAACAAAGGCAA
Occludin reverse	CTCCGTAATGACCAGA
ZO-1 forward	GCCTCCTGAGTTTGATAGTG
ZO-1 reverse	TCGGCAGACCTTGAAATAGA
β-actin forward	TGCGGGACATCAAGGAGAAG
β-actin reverse	AGTTGAAGGTAGT TTCGTGG