Quantification of the glial response and assessment of correlation between MRI and histological data.

<p>Histogram showing the relative tissue area occupied by OX42-positive microglial cells (A) and and GFAP-positive astroglial (B) in the L4-L5 segments of the spinal cord 4 weeks after ventral root avulsion (VRA) or axotomy (AXO) on the injured (Inj.) and uninjured side (Uninj.). Histogram showing the comparison between the relative area ratio following axotomy (C) and ventral root avulsion (D), as measured on MRI images (MRI) and histological preprations stained with NeuN (HISTO). Error bars show S.E.M. p<0.01 is indicated by **, p<0.001 is indicated by *** and ns. indicates lack of statistical significance.