Ludwig Karl Martin Leonhard Albrecht Kossel was a German biochemist and pioneer in the study of genetics. He was awarded the Nobel Prize for Physiology or Medicine in 1910 for his work in determining the chemical composition of nucleic acids, the genetic substance of biological cells. The Nobel Prize in Physiology or Medicine 1910, announced October 20, 1910. Albrecht Kossel, “in recognition of the contributions to our knowledge of cell chemistry made through his work on proteins, including the nucleic substances”. Albrecht Kossel: born 1853, Rostock, Mecklenburg (now Germany). Wiki link Data: the Nobel Foundation (CC0).