Fig. 2. Three-dimensional summary plate layouts depicting fold gene regulation for all genes studied. Data are expressed as fold difference of incision/sham. Values greater than 1.00 represent up-regulation after incision compared with sham. Values less than 1.00 represent down-regulation after incision compared with sham surgery. Each bar  represents the average fold regulation from eight animals (four incision and four sham). DRG = dorsal root ganglion; POD = postoperative day.