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Mark Schuler: August Krogh One of the most brilliant minds of the early half of the twentieth century was that of August Krogh of Denmark. Krogh achieved many successes in his outstanding work in the field of medicine. Krogh began his distinguished career in 1899 when he passed the examination for the Masters of Science degree in zoology. He continued his studies at the University of Copenhagen where he completed his doctoral thesis on the respiration of frogs. In 1916, Krogh became professor of animal physiology at the same university. There he established his own laboratory to further his experiments into the physiology of respiration. Frustrated by unreliable equipment, Krogh designed instruments which permitted him to carry out more accurate investigations. Through his experiments, Krogh discovered that the capillaries contract and dilate in proportion to blood requirements. For this discovery of the motor-regulating mechanisms of the capillaries, Krogh recieved the Nobel Prize for Medicine in 1920. This, however, was not Krogh's first recognition for outstanding work. In 1906, the Vienna Academy of Science lauded the investigations described in his treatise Mechanisms of Gas Exchange in Lungs. The British Journal of Physiology published many of his articles, and in 1916 he wrote The Respiratory Exchange of Animals and Man. Krogh also delivered the Silliman Memorial Lectures at Yale in 1922. This artwork was originally published on the Fleetwood® First Day Cover for the Denmark Europa stamp featured in the 1980 Portraits of Greatness collection. Artwork Copyright © 1980 Unicover Corporation. All Rights Reserved under United States and international copyright laws. You may not reproduce, distribute, transmit, or otherwise exploit the Artwork in any way. Images of the Artwork may be watermarked and/or digitally watermarked. Any sale of the physical original does not include or convey the Copyright or any right comprised in the copyright.
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