title: Urea biosynthesis. An experimental model for the study of the integration of a metabolic cycle during biological evolution. A review.
mesh_terms: D000818:Animals; D001120:Arginine / Q000096:biosynthesis; D005075:Biological Evolution; D001695:Biology; D004798:Enzymes / Q000378:metabolism; D006801:Humans; D008967:Molecular Biology; D009584:Nitrogen / Q000378:metabolism; D010944:Plants / Q000378:metabolism; D051381:Rats; D014508:Urea / Q000096:biosynthesis*; D014714:Vertebrates / Q000378:metabolism
chemical_list: D004798:Enzymes; D014508:Urea; D001120:Arginine; D009584:Nitrogen