Final answer:
Rudolf Virchow was a prominent German scientist known as the 'Father of Pathology,' and he made significant contributions to the development of the cell theory. He proposed the central tenet of modern cell theory that all cells arise from other cells. However, there is controversy surrounding his failure to credit his colleague Robert Remak.
Step-by-step explanation:
Rudolf Virchow was a prominent German scientist known as the "Father of Pathology." He was one of the first to determine the causes of diseases by examining their effects on tissues and organs. Virchow also published the essay "Cellular Pathology" in 1855, in which he proposed the central tenet of modern cell theory that all cells arise from other cells. His contributions to the development of the cell theory were significant, although there is controversy surrounding his failure to credit his colleague Robert Remak, who had published similar ideas earlier.