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Plasma FFA levels during saline (open bars) or nicotinic acid (NA) (30 μmol/h; gray bars) infusion in overnight-fasted rats. Effects of short (≤5 h) vs. 24-h infusion were determined in different rats such that plasma FFA levels were measured in similar fasting (18–24 h) states. Data are means ± SE (n = 5 for short and n = 7 or 9 for 24-h infusions). *P < 0.05 vs. saline control.
