to which part of the cell theory did virchow contribute
1845 Basic unit of life Carl Heinrich Braun reworks the cell theory, calling cells the basic unit of life. 1855 3rd part to the cell theory added Rudolf Virchow, a German physiologist/physician/pathologist added the 3rd part to the cell theory. The original is Greek, and states Omnis cellula e cellula. This translates as all cells develop only from existing cells. Virchow was also the first to propose that diseased cells come from healthy cells.