title: Sir Hans Krebs (1900-1981).
mesh_terms: D001671:Biochemistry / Q000266:history*; D002952:Citric Acid Cycle; D049673:History, 20th Century; D006801:Humans; D008660:Metabolism; D009952:Ornithine / Q000378:metabolism; D014508:Urea / Q000378:metabolism
chemical_list: D014508:Urea; D009952:Ornithine