Rudolf was German physician of experience; anthropologist pathologist, prehistorian, biologist, writer, editor, politician and public health relations. Virchow seemed never to be at rest with new discoveries in all his fields throughout his life. But he always had a peculiar opposition to the theory of spontaneous generation, and was out to prove its falsity. Through his research he did f]prove this theory wrong even with everyone's strong want to believe, he demonstrated cells division, even without full comprehension at the time, and the concept of cell reproduction. And he also contributed to earlier research stating not all plants have cells, another critical component in the cell theory.