title: INTERMEDIARY METABOLISM--BEFORE AND AFTER ISOTOPES.
mesh_terms: D006664:History; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007554:Isotopes; D008511:Medicine; D008660:Metabolism; D011868:Radioisotopes
chemical_list: D007554:Isotopes; D011868:Radioisotopes
keywords: HISTORY; HISTORY OF MEDICINE, 18TH CENT.; HISTORY OF MEDICINE, 19TH CENT.; HISTORY OF MEDICINE, 20TH CENT.; METABOLISM; RADIOISOTOPES