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Photomicrographs demonstrating VEGF-immunoreactive cells in the cauda equine (a, b) and DRG (c, d) in compression group (a, c) and sham-operated group (b, d) at day 28 after surgery. Schwann-like cells in the cauda equina and DRG neurons exhibited immunoreactivity for VEGF (arrows). Scale bar 50 μm
