Fig. 2.

Effects of intravenous LPS (doses indicated) or its vehicle (saline) on the body temperature of free-feeding or food-deprived (24 h) rats exposed to an ambient temperature of 30°C or 22°C. Within this experiment, initial body temperatures were 36.8 ± 0.1°C for free-feeding rats at 30°C; 36.7 ± 0.1°C for food-deprived rats at 30°C; 37.0 ± 0.1°C for free-feeding rats at 22°C; and 36.6 ± 0.1°C for food-deprived rats at 22°C. The number of animals in each group is shown in parentheses. *Statistical differences between food-deprived and free-feeding rats.