FIG. 7.

The mRNA expression for nerve growth factor (NGF), glial-derived growth factor (GDNF), growth-associated protein 43 (GAP43), and neurofilament heavy (NF-H), as measured by quantitative real-time polymerase chain reaction (qRT-PCR), in the regenerating nerves taken from the four groups at 12 weeks after nerve grafting. The mRNA expression was calculated by the 2^−ΔΔCT method using GDPHA as the reference gene. The relative mRNA levels were represented as the ratios by comparing the expression of each group with that of the ANA group (designated as 1). n=4 for each group, *p<0.05, **p<0.01. Color images available online at www.liebertpub.com/tea