Rudolf Ludwig Karl Virchow (born October 13, 1821, in Schivelbein (Pomerania); died September 5, 1902, in Berlin) was a German doctor, anthropologist, public health activist, pathologist, prehistorian, biologist and politician. He is referred to as the "Father of Pathology". Wikipedia
The definitive Wikipedia entry for Rudolf Virchow. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Rudolf_Virchow
Virchow was a major advocate of the cell theory and published an influential theory that cells arose from each other in a continuous series of generations (" Omnis cellula e cellula "). www.nceas.ucsb.edu/~alroy/lefa/Virchow.html