Breer H
FEBS Lett. 1983 Mar 21;153(2):345-8. doi: 10.1016/0014-5793(83)80639-5.
Membrane vesicles derived from insect nervous tissue are capable of accumulating choline via a high affinity, carrier-mediated process with ion gradients as the sole driving force. The transport is strictly dependent on the presence of Na+ and Cl- in the medium and is stimulated by a membrane potential.