Unformatted text preview: concluded that all animals are also composed of cells. In 1858, the biologist Rudolf Virchow proposed that all living things are made of cells and that all cells arise from preexisting cells. These premises have come down to us as the cell theory....
View Full Document
- Fall '10
- Plants, Anton van Leeuwenhoek, German botanist matthias, Theodore Schwann, microorganism cells, anatomist Theodore Schwann