jan 1, 1838 - M.J. Schleiden and T.S. Schwann
Description:
Schleiden and Schwann compared plant and animals' cells and discovered a nucleus in all of them. It appeared that anything smaller than a cell could not survive. They came to the conclusion that cells are the basic unit of life, everything alive has to be made up of one or more cells.Added to timeline:
Date:
jan 1, 1838
Now
~ 187 years ago