congress - Austria / II. Republic of Austria 1981 - 6 Shilling

From August 30 to September 5, 1981, the 11th International and the 4th European Congress of Clinical Chemistry took place in the Vienna Hofburg. This field of study deals with all chemical questions that are directly related to theoretical and practical medicine. This also includes all clinical-chemical examinations of body fluids that are used to detect diseases and to control treatment success. The portrait of the special postage stamp shows Johann Florian Heller (1813-1871). He is regarded as the pioneer of chemical urine diagnostics and was the first to introduce the world's routine routine chemical and microscopic urinalysis in Austria. After the death of Hellers in 1871, the chemist Ernst Ludwig (1842-1915) was appointed the first professor of medical chemistry at the University of Vienna. Ludwig's main interest was in analytical chemistry. Both scientists are regarded as the founders of medicinal chemistry and thus of clinical chemistry in Austria. They were chemists by training, but both were honored by receiving the honorary doctorate in medicine. This recognition shows the importance of chemistry in the 19th century for medicine.