Changes in renal sympathetic nerve discharge (SND), splenic SND, mean arterial pressure (MAP), and heart rate (HR) during increases in internal body temperature (Tc) from 38 to 41.5°C in YSHAM (▴), YHF (▵), ASHAM (●), and AHF (○) rats. P < 0.05, YSHAM vs. control (38°C) values (*), AHF, ASHAM, and YHF vs. control (38°C) values (**), YSHAM vs. YHF and ASHAM groups (†), and YHF vs. AHF (‡).