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dec 13, 1839 - Theodor Schwann

Description:

In 1838 Matthias Schleiden had stated that plant tissues were composed of cells. Schwann demonstrated the same fact for animal tissues, and in 1839 concluded that all tissues are made up of cells: this laid the foundations for the cell theory.

Added to timeline:

Date:

dec 13, 1839
Now
~ 185 years ago