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From Wikipedia, the free encyclopedia. The urea cycle (also known as the ornithine cycle) is a cycle of biochemical reactions occurring in many animals that produces urea ((NH2)2CO) from ammonia (NH3). This cycle was the first metabolic cycle discovered (Hans Krebs and Kurt Henseleit, 1932), five years before the discovery of the TCA cycle. In mammals, the urea cycle takes place primarily in the liver, and to a lesser extent in the kidney.
What is Urea Cycle Disorders? Urea Cycle Disorders: Any disorder that affects the urea cycle. Urea Cycle Disorders: Introduction Types of Urea Cycle Disorders: Broader types of Urea Cycle Disorders: Genetic conditions; Metabolic conditions; Congenital conditions - metabolic disorders; Congenital conditions; more types...Â» What causes Urea Cycle Disorders? Causes of Urea Cycle Disorders: see causes of Urea Cycle Disorders. What are the symptoms of Urea Cycle Disorders? Symptoms of Urea Cycle Disorders: see symptoms of Urea Cycle Disorders