Fig. 4From: Effects of endogenous inflammation signals elicited by nerve growth factor, interferon-γ, and interleukin-4 on peripheral nerve regenerationPhotomicrographs of CGRP-IR in dorsal horn in the lumbar spinal cord after injury. a The positive CGRP-IR area ratio, b Cross-sectional histological view of CGRP-labeled fibers (arrows) via immunohistochemical staining. Scale bar = 200 μmBack to article page