this is deduced from the lack of effect of a metabolic inhibitor and sodium-transport inhibitors on the fast component of 22na efflux ( which contrast with their effects both on the size an the half-time of the slow component ) and from the typically extracellular ratios between the fast components of substantial increase in the fast fractions of 22na and 45ca efflux but only a small increase in 36cl efflux : effects which would be expected if the addition to the fast fraction consisted of ions maintained in donnan equilibrium with fixed anionic sites within the extracellular system .
C0022023
ions
C0003075
anionic