Table 1. Real-Time PCR Primer Sequences.

NGF forward	5′-GGACGCAGCTTTCTATCCTG-3′	product length (bp): 368
NGF reverse	5′-CATGGGCCTGGAAGTCTAAA-3′
β-actin forward	5′-CTTCCTGGGTATGGAATCCTGT-3′	product length (bp): 364
β-actin reverse	5′-GGTGTAAAACGCAGCTCAGTAAC-3′