div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: α-Ketoglutaric Acid and Pyruvic Acid in Blood Cerebrospinal Fluid and Urine src=https:reader036fdocumentorgreader036viewer2022081703575068131a28ab0f07ae7ca0html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divp© 1959 Nature Publishing Grouppdiv