Misc Article 01. Evaluation of Polyuria: The Roles of Solute Loading and Water Diuresis. 02. Proximal Tubule Function and Response to Acidosis. 03. Handling of Drugs, Metabolites, and Uremic Toxins by Kidney Proximal Tubule Drug Transporters. 04. Electrolytes and Acid-Base Disorders. 05. Physiology of the Renal Interstitium. 06. Collecting Duct Principal Cell Transport Processes and Their Regulation. 07. Acid-Base Homeostasis. 08. Acid-Base Disturbances in Gastrointestinal Disease. 09. Acid-Base Disorders in the Critically Ill Patient. Urine electrolytes 01. Use of Urine Electrolytes and Urine Osmolality in the Clinical Diagnosis of Fluid, Electrolytes, and Acid-Base Disorders. 02. Urine Electrolytes in the Intensive Care Unit: From Pathophysiology to Clinical Practice. 03. The Use of Selected Urine Chemistries in the Diagnosis of Kidney Disorders.