Table I.

Sequences for the primers used quantitative polymerase chain reaction in the present study.

Gene	Primer	Sequence
Proline-rich 4	Forward	5′-ACGAGGACACCGTCAACTCT-3′
	Reverse	5′-TCAATGTCATGGCTTTCTGAAG-3′
β-actin	Forward	5′-CTCGCGCTACTCTCTCTTTCTGG-3′
	Reverse	5′-GCTTACATGTCTCGATCCCACTTAA-3′