these results suggest that if the na+-ca++ ratio in the posterior hypothalamus establishes and maintains the set-point for body temperature of 37 degrees -38 degrees c , the mechanism of lability of ca++ through changes in binding characteristics , transport , or metabolism of the cation serves two purposes : ( 1 ) the active defense of the set-point temperature through gradations in ion shifts ;
C0007447
cation
C0022023
ion