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Quantitative comparison of the mRNA expression for COX-1 and COX-2 in the PVN of ANG II-infused rats treated early (A and B) or late (C and D) with PVN microinjections of p44/42 MAPK siRNA, a scrambled siRNA, or vehicle. Untreated rats served as Control. Values are mean ± SEM (n = 6-8 for each group). *P< 0.05, vs. Control.
