Lapakan, nitoni eto oselu   Naijiria, Rotimi lo pupo ninu 1990s e ni Caribbean ati United States, nibi ti o ti ko akeko ni ile iwe Macalester College ni St.. 
Arginine ni ó máa ń jẹ́ kí ìṣẹ̀dá yí bẹ̀rẹ̀.ìdà rẹ̀ ní ìfi omi tú ẹgbẹ́  acetyl ka, lọ́wọ́ enzyme tí ó ń jẹ́ hydrolase.cGlu sọ carbamoyl phosphate synthetase di àṣìṣe nínú urea cycle.tún wo glutamate glutamate glutamic acid ìtọ́kasíàwọn àjápọ̀ látìta àyọkà àkurú 2.. 