Fig. 4

Photomicrograph of spinal cord of different experimental groups, (H&E) at day 28 post-treatment: a–e Control group showing normal histological structure of gray matter (b, c) and white matter (d, e). f–j EB-treated group showing f severe extensive hemorrhage in gray and white matters, g hemorrhage with perivascular lymphocytic cuffing in gray matter, h higher magnification, hemorrhage with perivascular lymphocytic cuffing (black arrow) and chromatolysis (green arrows), i hemorrhages in white matter, j congested blood vessel with perivascular lymphocytic infiltration in white matter (arrow). k–o SVF co-treated group showing, l, m apparently normal spinal cord with limited hemorrhages in gray matter (arrowhead), and n, o apparently normal nerve fibers with mild demyelination in white matter (red arrow)