Quantitative analysis of CGRP-positive fibers at the dorsal horns.

(A) Abnormal sprouting into lamina III at the dorsal horns was detected in both groups 12 weeks after SCI. Scale bar, 200 µm upper, 100 µm lower. (B) Quantitative analysis of the total length of these abnormal fibers showed no significant differences between the two groups in any segment examined (n = 6 for the rhHGF group; n = 5 for the PBS group; n = 1 for intact spinal cord).