Fig. 3. Immunohistochemical expression of Iba1 in the ipsilateral L5 dorsal horn (A) and intensity of Iba1 immunoreaction versus vehicle controls (B) at 56 days after treatment commencement. A : Iba1-positive microglia numbers were lower in the ipsilateral dorsal horns of the GCSB-5 300 group than in the aceclofenac group or vehicle controls. B : the percentage decrease was greater in the GCSB-5 300 group than in the GCSB-5 100, GCSB-5 600, aceclofenac or vehicle control groups. Results are presented as mean±SEM. Bar=100 µm.