The modern cell theory states that:
The credit for development of cell theory is usually given to two scientists: Theodor Schwann and Matthias Jakob Schleiden. They stated the first two postulates of cell theory a) living beings are composed of cells b) cell is the basic structural and functional unit of life. In 1855, Rudolf Virchow added the third postulate to cell theory. In Latin, this tenet states Omnis - cellula - e-cellula which means all cells come from previously existing cells.
Therefore, modern cell theory says that living beings are composed of cells, cell is the basic structural and functional unit of life and all cells come from previously existing cells.
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