Figure 2

Number of c-fos mRNA-positive cells per section (0.01 mm) in various laminae and areas of the unilateral dorsal half of the caudal thoracic spinal cord determined 45 min after IG administration of (A) NaCl (0.15 M), HCl (0.5 M), (B) vehicle (Veh) and capsaicin (Cap, 3.2 mM). The graphs show the counts for laminae I-V (LI-LV), area X (AX) and the intermediolateral nucleus (IMLN). Means + SEM, n as indicated. * P < 0.05, ** P < 0.01 versus Veh.