Konrad Adenauer | Robert Bloch | Ernest Bloch | Bloch | György Konrád | Konrad Lorenz | Ernst Bloch | Konrad Zuse | Iwan Bloch | Konrad von Hochstaden | Konrad I, Duke of Głogów | Konrad I | Konrad Duden | Joshua Bloch | Maurice Bloch | Marcel Bloch | Marc Bloch | Lucienne Bloch | Konrad Witz | Konrad von Preysing | Konrad Ruhland | Konrad Osterwalder | Konrad Friedrich Bauer | Konrad Adenauer Foundation | Johann Konrad Wilhelm Löhe | Friedrich Konrad Beilstein | Felix Bloch | Carl Bloch | Bloch wave | Bloch sphere |
In 1933, he moved to Columbia University to join the department of Biological Chemistry and worked with David Rittenberg, from the radiochemistry laboratory of Harold C. Urey, later together with Konrad Bloch, using stable isotopes to tag foodstuffs and trace their metabolism within living things.