User:K.ebersole/sandbox
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In biology, cell theory is a scientific theory that describes the properties of cells, which are the basic unit of structure in all organisms and also the basic unit of reproduction. The initial development of the theory, during the mid-17th century, was made possible by advances in microscopy; the study of cells is called cell biology. Cell theory is one of the foundations of biology.The observations of Robert Hooke, Anton van Leeuwenhoek, Matthias Schleiden, Theodor Schwann, Rudolf Virchow, and others led to the development of the cell theory. The cell theory is a widely accepted explanation of the relationship between cells and living things.
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The three tenets to the cell theory are as described below:
- All living organisms are composed of one or more cells
- The cell is the most basic unit of life.
- All cells arise from pre-existing, living cells.