Tag Archives: Physiology or Medicine

The first description of DNA: a six million dollar letter from Francis to Michael Crick

Marshall A. Lichtman  Rochester, New York, United States   Figure 1. The boyish appearing James Watson (left) and the Francis Crick with their three-dimensional model of DNA in their Cavendish Laboratory office at Cambridge University, United Kingdom. Circa 1953. Photo credit: A. Barrington Brown/Science Photo Library. Via the Rockefeller University Digital Commons. In the April […]

Karl Landsteiner and the discovery of blood groups

Safia Benaissa Mostganem, Algeria   Karl Landsteiner (1868–1943), Austrian pathologist, hematologist and serologist; discoverer of the blood groups. Albert Hilscher. circa 1910. Accessed via Wikimedia Commons Karl Landsteiner was the Austrian scientist who recognized that humans had different blood groups and made it possible for physicians to transfuse blood safely. He entered medical school at […]