KAR, Stress & Steroids Figure 4. Representative photomicrographs showing KA2 mRNA signal on the right and GluR5 mRNA on the left. We did not observe changes in expression of either of these transcripts. doi:10.1371/journal.pone.0004328.g004 Figure 5. ROD of KA1 mRNA in the dentate gyrus (A) and CA3 (B) after CRS. *-significantly different from unstressed controls (p,0.05, n = 8). doi:10.1371/journal.pone.0004328.g005 Figure 6. ROD of KA1 mRNA in the dentate gyrus (A) and CA3 (B) after 21 day treatment with either vehicle, 25 mg/ml or 400 mg/ml corticosterone in drinking water. *-significantly different from vehicle treated animals (p,0.05, n = 8). doi:10.1371/journal.pone.0004328.g006 PLoS ONE | www.plosone.org 4 January 2009 | Volume 4 | Issue 1 | e4328