Cells divide and new cells are formed from pre-existing cells . This concept was given by
M . Schleiden
T. Schawann
Purkinje
R. Virchow
As we have learned
The law of cell lineage -
The Cell-Theory was extended and refined that the cell develops from pre-existing cells -Omnis Cellula-e-Cellula
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Rudolf Virchow gave the concept of "omnis cellula-e-cellula"