By: Emma Mauritsen
The Cell Theory
Anton Van Leeuwenhoek
Leeuwenhoek wag the first to see living cells. He also discovered the first protozoa and bacteria.
Schwan said that animal tissue, not only plant tissue, was made of cells. He thought that cells are organisms and all living things are made of one or more cells. Schwann also thought that the cell is the basic structure of everything.
Virchow said that all cells come from existing cells and that disease cells come from healthy cells.