Opening Remarks.- Ion Gradient Hypotheses and the Energy Requirement for Active Transport of Amino Acids.- Models of Coupling and their Kinetic Characteristics.- Lipid-Protein Interaction in Presence of Alkali-Cations.- Neutral Amino Acids and the Ion Gradient Hypothesis.- Electrolyte Effects on the Transport of Cationic Amino Acids.- Transport of Amino Acids in Ehrlich Ascites Cells and Mouse Pancreas.- An Examination of the Energetic Adequacy of the Ion Gradient Hypothesis for Nonelectrolyte Transport.- Some Observations on the Nonhomogeneous Distribution inside the Ehrlich Cell.- The Influence of H+, Na+ and K+ on the Influx of Glutamate in Ehrlich Ascites-Tumor Cells.- Evidence for a Sodium-Independent Transport System for Glucose Derived from Disaccharides.- The Na-Independent Transport of Sugar in Renal Tubular Cells.- Sodium-Dependent Accumulation of Sugars by Isolated Intestinal Cells. Evidence for a Mechanism not Dependent on the Na+ Gradient.- The Effect of Sodium on the Transtubular Transport of D-Glucose in Rat Kidney and on the D-Glucose Binding to Isolated Brush Border Membranes.- Views Dissenting with the “Gradient Hypothesis”. Intestinal Sugar Absorption, Studies in vivo and in vitro.- Two Modes of Sodium Extrusion from Dog Kidney Cortex Slices.- General Comment.- Sodium Activation of Intestinal Sugar and Amino Acid Transport: A General or an Individual Effect?.- Is there any Evidence for a Transport System for Glucose Derived from Sucrose in Rat Kidney?.- A Hypothesis on the Mechanism of Mutual Inhibition among Sodium-Dependent Transport Systems in the Small Intestine.- Does the Stoichiometry of Coupling Necessarily Reveal the Composition of the Ternary Complex?.- Specific Comment on the Paper Presented by Dr. H. N. Christensen.- A Sodium Dependent,Non-Carrier Mediated Transport of a Passive Diffusing Substance across the Intestinal Wall.- K+-Ions, Swelling, and Sugar Transport in Muscle.- Sodium-Dependent Uptake of Iron-Transferrin in Rabbit Reticulocytes.- Carrier-Mediated, Na+-Independent Translocation of Calcium across the Brush Border Membrane of Rat Duodenum in vitro.
