Frequency-dependent lactose uptake via the H+/lactose symporter in an exter
nally applied low-intensity alternating electric field was demonstrated, us
ing tracer flux experiments. The uptake of radiolabeled lactose was signifi
cantly inhibited with the electric field-strength of 30 V/cm and at frequen
cies below 10 Hz. (C) 1999 Elsevier Science S.A. All rights reserved.