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Cumulative food intake of rats in experiment 3 during the 60 h following a fourth-ventricle injection of either saline or 1.0 μg leptin. *Significant inhibition of intake following leptin injection. Values for intake at 30 h that do not share a common letter are significantly different at P < 0.05. Data are means ± SE for groups of 7–9 rats. Black bars indicate the dark phase of the light cycle.
