Figure 2From: Downregulation of alpha7 nicotinic acetylcholine receptor in two-kidney one-clip hypertensive rats Serum levels of TNF-α after surgery to induce 2K1C hypertension at 4, 8 and 20 weeks. *P < 0.05 compared with aged-matched sham-operated group. Data are means ± SEM (n = 7 in each group) (unpaired t test).Back to article page