Rudolf Virchow (Schivelbein, Pomerania, October 13, 1821 - Berlin, September 5, 1902) is a German physician, university professor, politician, and an external member of the Hungarian Academy of Sciences.
He studied medicine in Berlin, became a physician, an assistant to Robert Froriep in Charite in 1844, and in 1846 he became a permanent successor. In 1848, on behalf of the then Minister of Culture, he studied the typhus outbreak raging in Upper Silesia, about which he wrote exhaustive reports. With his reform proposals, he became uncomfortable with the government and was therefore deprived of his job. He then went to Würzburg as a regular professor of pathology, but as early as 1856 he returned to Berlin as a professor of pathology, general pathology and medicine, and director of the new Institute of Pathology. In Würzburg he was a member of the Verhandlungen der phisical-med. Gesellschaft, also edited by Handbuch der spec. Path. u. Therapy too. In 1859, on behalf of the Norwegian government, he studied leprosy on the west coast of Norway, from 1861 he was a member of the Berlin City Council, from 1862 of the Prussian House of Representatives, and from 1880 of the German Imperial Assembly. In 1873 he was elected an external member of the Hungarian Academy of Sciences. In the field of public health, many blessed institutions were partly founders and partly supporters. He also did research in the field of archeology, where he showed significant results.
He overturned Rokitansky’s theory of the causes of diseases known as Krasenlehre, as well as Cruveilhier’s view of phlebitis (superficial varicose veins), made fundamental findings about leukemia, thrombosis, embolism, and infection; he was the first to observe the ability of human cells to contract, he discovered the vagina of blood vessels in the brain. He proved that the red blood dye only enters the already finished cell afterwards, he gave the first clear picture of the new formations of the gray brain; has shown that the ingestion of trichinosis meat can be directly contagious; found a difference between dysentery and enteritis diphteritica. He was instrumental in steering views of the cleanliness of cities into the right channel; explored the causes of rickets and cretinism; challenged many of Pettenkofer's claims and views on the cholera epidemic, and so on. His cellular pathology, which he considered a biological principle, is widespread and has laid a solid foundation for the pathology, which has not been shaken by recent research, and has even been followed by Rokitansky. In November 1897, he celebrated the fiftieth anniversary of his scientific activity. He died in 1902 in Berlin at the age of eighty.
His main works
The cellular pathology is characterized by physiol therapy. und path. Gewebelehre (Berlin, 1858, 4th ed. 1871, then translated into all European languages), as well as his first volume, Vorlesungen über Pathologie. his work, of which the second, third volumes and the first half of the fourth volume consist of his unfinished work Die krankhaften Geschwülste (ibid. 1863-67); 
Study of Trichinae (ibid., 1865, 3rd ed., 1866); About Typhoid Famine (1866)
On chlorosis and related vascular disorders, especially endocarditis puerperalis (lecture in the Berlin Obstetrics Society, ibid., 1872)
Autopsy Technique (1876), 2nd Edition, 1883
Freedom of Science in the Modern State was translated into Hungarian by Árpád Bakody (Budapest, 1878)
He has published several articles in various medical journals.
the great lexicon of Pallas
List of persons depicted on Hungarian postage stamps