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Cell theory is proposed by three scientist schleiden schwan and rudolf virchow .
Three points of cell theory:-
1.All living organisms are composed of one or more cells.
2.Cell is the basic structural,fundamental unit of life.
3.Cells can arise only from pre-existing cells.
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Schleiden and Schwann suggested that
*All Plants and animals are made up of cells.
*It is the basic structural unit of life.
Later it was modified by Virchow by suggesting that
*All cells arise from a pre-existing cell.
This is known as the Cell Theory.
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