Figure 5From: Multiple injections of human umbilical cord-derived mesenchymal stromal cells through the tail vein improve microcirculation and the microenvironment in a rat model of radiation myelopathy Representative micrographs of von Willebrand factor immunohistochemical staining of the rat spinal cord after a single dose of 30 Gy. Arrows,endothelial cells; arrowheads,microvessels. Scale bars = 20 μm.Back to article page