Fig. 4. Immunohistochemical expression of GFAP in ipsilateral L5 dorsal horns (A) and GFAP immunoreactivities versus vehicle controls (B) at 56 days after treatment commencement. A : GFAP-positive astrocyte numbers were lower in ipsilateral dorsal horns of the GCSB-5 300 group than in the aceclofenac or vehicle controls groups. B : Percentage decreases were 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. GFAP : glial fibrillary acidic protein.