The more the relationships of the nitrogen-rich substances to the cell nucleus were recognized, the more the question of the arrangement of the nitrogen and carbon atoms in the molecule came to stand out. — Albrecht Kossel Copy Share Image
The living cell almost always contains, locked in its interior, the visible or invisible products of its physiological activity or its nourishment. — Albrecht Kossel Copy Share Image
The more the relationships of the nitrogen-rich substances to the cell nucleus were recognized, the more the question of the arrangement of the nitrogen… — Albrecht Kossel Copy Share Image
