Fig. 3.
Spinal GFAP expression in the superficial and deep laminae of the dorsal horn after injury or sham with either gabapentin (injury-GBP, sham-GBP) or vehicle (injury-vehicle, sham-vehicle) treatment. In the superficial lamina, GFAP is significantly elevated (**p<0.001) in injury-vehicle above all other groups (injury-GBP, sham-GBP, sham-vehicle). In contrast, the increase in injury-vehicle is only significantly higher (*p<0.01) than sham-GBP and sham-vehicle in the deeper lamina. There is no difference between injury-GBP, sham-GBP, and sham-vehicle in either region. The scale bar (100 μm) applies to all panels.