Active Transport of Potassium and Chloride in an Identifiable Molluscan Neuron

Abstract

Direct measurements of intracellular K⁺ and Cl^-activities before and after blockage of cellular metabolic processes indicate that K⁺ is actively transported inwardly and Cl^-is actively transported outwardly from the giant cell of the abdominal ganglion of Aplysia. The rewarming of cells that have been cooled to 1° ± 1°C causes K⁺ to be taken up and Cl^- to be extruded against electrochemical gradients.