title: Nonproductive exchanges: the use of isotopes gone astray.
authors.forename: B R
authors.initials: BR
authors.lastname: Landau
authors.forename: J
authors.initials: J
authors.lastname: Wahren
mesh_terms: D000818:Animals; D002250:Carbon Radioisotopes / Q000378:metabolism; D006801:Humans; D007773:Lactates / Q000097:blood / Q000378:metabolism; D019344:Lactic Acid; D008660:Metabolism; D009132:Muscles / Q000378:metabolism; D011773:Pyruvates / Q000378:metabolism; D019289:Pyruvic Acid; D011868:Radioisotopes
chemical_list: D002250:Carbon Radioisotopes; D007773:Lactates; D011773:Pyruvates; D011868:Radioisotopes; D019344:Lactic Acid; D019289:Pyruvic Acid