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Timeline

Michaela Yu

Created on February 18, 2025

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Transcript

Cell Theory

1855

Rudolf Virchow: Concluded that cells come from pre-existing cells (biogenesis theory).

20xx

Plan

1665

Robert Hooke: First to use the term "cell" after observing cork under a microscope.

1838

Matthias Schleiden: Proposed that all plants are made of cells.

GOAL

START

1674

Antonie van Leeuwenhoek: Discovered microscopic organisms using a more advanced microscope.

1839

Theodor Schwann: Stated that all animals are made of cells.