Figure 5.

Representative photomicrographs of IL‐1β immunoreactivity in the paraventricular nucleus (PVN) of targeted Gαi₂ or control scrambled (SCR) intracerebroventricular oligodeoxynucleotide (ODN)‐infused [25 µg (5 µl)⁻¹ day⁻¹ for 7 days] male Sprague–Dawley rats on 7 days of normal‐salt (NS; 0.6% NaCl) or high‐salt (HS; 4% NaCl) diet. (a) SCR ODN‐infused rat on NS diet. (b) SCR ODN‐infused rat on HS diet. (c) Gαi₂ ODN‐infused rat on NS diet. (d) Gαi₂ ODN‐infused rat on HS diet. Abbreviation: 3V, third ventricle. (n = 6 per group, scale bars: 200 µm; large images ×20 magnification, inset ×40 magnification; arrows point to IL‐1β stain.)