Carl Arnold Ruge (24 September 1846 – 15 April 1926) was a German pathologist who was a native of Berlin.
For a number of years he served as director of the laboratory for microscopic and clinical research in the Frauenklinik at the Charité-Berlin.
In Berlin he worked closely with gynecologist Karl Ludwig Ernst Schroeder (1838-1887).
With his associate Johann Veit (1852–1917), he is credited with establishing the groundwork for contemporary gynecological pathology and histology.
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