Fig. 1. A–H, Bright-field film (A–F) and dark-field emulsion (G,H) autoradiograms of RGS4 expression in the PVN of control rats (A, C, E,G) or those treated with chronic stress (B, H; chr stress), acute corticosterone (D; ac cort), or chronic corticosterone (F; chr cort).cp, Striatum; ctx, cortex;hp, hippocampus; pvn, paraventricular nucleus of the hypothalamus; th, thalamus. Scale bar:A–F, 3.3 mm; G, H, 1.2 mm. I, Summary of results (mean ± SEM;n = 3–6; *p < 0.05, two-tailed t test).