Symposium I Regulation of Ion Transport Across Epithelial Membranes.- Neurohumoral Regulation of HCO3- Secretion by Choroid Plexus.- cAMP Increases the Apical Cl--Conductance in the Rectal Gland of Squalus acanthias.- Control of Chloride Secretion by Intracellular Calcium in the Rat Colon.- Passive Cl- Currents in Toad Skin: Potential Dependence and Relation to Mitochondria-Rich Cell Density.- Na+ Transport in Toad Bladder Microsomes.- Apical K+ Channels in Frog Skin: A Pathway for K+ Excretion.- Coupling of the Free Energy of Hydrolysis of ATP to Na+ Transport Across Frog Skin.- Symposium II Mineralocorticoid Control of Ion Transport — Role in NaCl Adaptation.- Osmotic Control of Aldosterone Secretion.- Acute, Delayed, and Chronic Actions of Mineralocorticoids.- Evidence for Bipolar Effects of Aldosterone in Toad Skin.- Physiological Mechanisms Underlying the Stimulation of Na Transport in the Toad Urinary Bladder by Aldosterone.- Mineralocorticoid Regulation of Lower Intestinal Ion Transport.- Symposium III Ion Transport Across Gills: Comparative Aspects.- Ion Transport in Crustacean Gills: Physiological and Ultrastructural Approaches.- The Function of Carbonic Anhydrase in Crustacean Gills.- Modes of Ammonia Transport Across Fish Gills.- Branchial Ion Transfer Processes as Mechanisms for Fish Acid-Base Regulation.- Peptidergic Control of Transport in the Teleost Gill.- Symposium IV Intestinal Transport: Comparative Aspects.- Modulation of Transepithelial Cl- Permeability.- Comparative Aspects of Enterocyte Differentiation.- Adaptation of Intestinal Sugar and Amino Acid Transport in Vertebrate Evolution.- Electrophysiology of Fish Intestine.- Transport Across the Invertebrate Intestine.- The Gut as an Osmoregulatory Organ: Comparative Aspects and Special Referencesto Fishes.- Symposium V The Exchange of Organic Substances Between Animal Organisms and Their Environment.- Regulation of Uptake of Free Amino Acids in Eukaryote Marine Organisms.- Mechanism and Physiological Role of Epidermal Amino Acid Transport in Marine Bivalves.- Increased Uptake of Nucleosides in the Activation of Sea Urchin Eggs.- Energy Coupling in Active Transport of Substrates in Leishmania.- Transport Physiology of Syncytial Epithelia.- Nutrient Uptake by Tapeworms.- The Transport of Exogenous Organic Substances by Invertebrate.- Symposium VI Cell Volume Control Processes: Comparative Approaches.- a) Cell Volume Maintenance and Regulation.- Cell Volume Maintenance in Isosmotic Conditions.- Neuronal Adaptations to Osmotic Stress.- Cell Volume Control and Ion Transport in a Mammalian Cell.- Volume-Sensitive Passive Potassium Fluxes in Red Cells.- b) Organic Osmotic Effectors and Buffer Substances.- The Osmotic Role of Amino Acids: Discovery and Function.- Organic Osmotic Effectors in Cartilaginous Fishes.- Glycerol and Other Carbohydrate Osmotic Effectors.- Intracellular pH, Buffering Substances and Proteins: Imidazole Protonation and the Conservation of Protein Structure and Function.- Molecular Basis of the Biological Compatibility of Nature’s Osmolytes.
