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Mean number (±SE) of c-Fos-immunoreactive cells in hypothalamic nuclei 2 h after intraperitoneal injection with saline (n = 5), 10 μg of SEA (n = 6), or 5 μg of LPS (n = 4). Each bar represents the mean ± SE. Arc, Arcuate nucleus. *p < 0.05 relative to saline.