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Plasma levels of PGD2 and PGE2, as well as the ratio between them, at 100 min after administration of LPS (2,500 μg/kg iv) or saline (iv) in free-feeding or food-deprived (24 h) rats exposed to an ambient temperature of 22°C. The number of animals in each group is shown in parentheses. N/A, not applicable. *Statistical differences between food-deprived and free-feeding rats.
