during hypoxia , cell sodium , measured using potassium ethylenediamine tetraacetate cobaltate as an extracellular marker , increased in amiloride and amiloride-free hearts , but there was no increase in cell calcium ( 3.3 +/- 0.3 vs. 3.6 +/- 0.9 mumol/g dry wt ; p = ns ) .
C0032821
potassium
C0002502
amiloride