Objective To examine the expression of CGRP in congenital pseudarthrosis of tibia(CPT) in order to find the pathogenesis of CPT.Methods Periosteum and bones from CPT patients were collected as experimental group.Immunohistochemistry stain was applied to determine the differences of the expression of CGRP in two groups.Results CGRP was located at vessel wall of periosteum and intracytoplasm of osteoblasts and osteoclasts in bones,its expression was significantly less in periosteum and bones of CPT than that in control group(P
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