an analysis of passive na+ fluxes showed a difference in the handling of na+ via ouabain and bumetanide-insensitive transport between the two cell types : h.ep.2 cells achieved net na+ influx via an amiloride-sensitive pathway that was only demonstrated in fibroblasts when 10 % fetal calf serum ( fcs ) was present .
C0007634
cells
C0016030
fibroblasts