Changes in rat brain metabolism immediately after whole body hyperthermia. (A) Metabolic changes were assessed by lactate dehydrogenase (LDH) and succinate dehydrogenase (SDH) activity and RNA content at CEM43=1.07 min in three rat brain regions [20], and (B) metabolic changes vs. CEM43, as assessed by extracellular brain lactate, pyruvate, glutamate, and glycerol concentrations vs. CEM43 [8].