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. 2013 Aug 31;29(1):9–17. doi: 10.1007/s11011-013-9428-9

Fig. 1.

Fig. 1

The role of GLN in ammonia detoxification in physiological state. The most of endogenous GLN is synthesized from glutamate and ammonia in the brain, skeletal muscle, and likely the lungs. GLN released to the circulation is catabolized in enterocytes, kidneys, and liver to ammonia, and this is detoxified to urea in the liver or excreted together with urea in the urine