Cell Theory

Aristotle stated that cells are offspring of other cells

350

(384-322)b.c. Aristotle stated that all cells come from pre-existing cells.

Helmont studied that diseases spread and grow by cells

Jan 1, 1580

Helmont discovered and stated that disease spreads by the grownth of it and needs to be treated with its own treatment

Lifesnan of Cell Thoery

Period: Jan 1, 1590 to Nov 11, 2000

First Microscope invented

Jan 1, 1595

Jansen created the First compound microscope.

Redi proves spontaneous generation wrong

Jan 1, 1626

Redi stated that living things do not appear from spontaneous generation.

Protazoa is discovered

Jan 1, 1674

Leeuwenhoek discovered living protozoa cells.

Lorenz Oken proposes a theory

Jan 1, 1805

Oken stated that all organic beings originate and consist of vesicles of cells

Robert Brown studied the nuclei of plants cells

Jan 1, 1833

Robert Brown stated that the nucleus is a constant component of the plant cell

Schleiden and Schwann proposed a theory

Jan 1, 1838

Schleiden and Schwann proposed cell theory that all living things are made of cells.

Spontaneous Generation is being proven wrong

Jan 1, 1857

Louis Pasteur conducts and experiment to diprove spontaneous genration.

Theory is proposed that all cells come from pre-existing cells.

Jan 1, 1858

Rudlof Virchow stated that all cells come from pre-existing living cells.