the measurement of the uptake of [ ( 3 ) h ] tributylbenzylammonium ( [ ( 3 ) h ] tbba ( + ) ) , the most active lipophilic cation on h ( + ) extrusion , indicated that although a relevant fraction of tbba ( + ) taken up by the tissue is adsorbed to cell surfaces , a fraction of the cation enters the cells .
C0699040
cell surfaces
C0007634
cells