TIMELINE OF THE
DEVELOPMENT OF CELL
THEORY
By: Cindy Chen, Sofia Benares, Mahek Tulsiani,
Kristel Jalandoni
1595
Hans and Zacharias
Janssen created the
first compound
microscope
1665
Robert Hooke observed
cells in a thin slice of
cork.
1680
Anton van Leeuwenhoek
observed living cells in
scrapings of teeth,
rainwater and blood.
1838
Theodor Schwann
(biologist) and Matthias
Schleiden (physiologist)
discover together that
both animal cells and
plants cells have nuclei.
1839
Theodor Schwann and
Matthias Schleiden
formulate cell theory.
1839
Schwann publishes
'Microscopic Investigations
on the Accordance in the
Structure and Growth of
Plants and Animals',
outlining cell theory.
1855
Rudolf Virchow stated
that all living cells come
only from other living
cells
1886
August Weismann puts
together cell theory with
evolutionary theory
CELL
THEORY
The theory
that all
living things
are made up
of one or
more cells.
http://www.lycos.com/info/matthias-jakob-schleiden.html
MATTHIAS SCHLEIDEN
1814-1881
 German
botanist
 Wrote
“Contributions to
Phytogenesis”
 Professor of
Botani at
University of
Tartu
http://www.lycos.com/info/matthias-jakob-schleiden.html
http://www.cbu.edu/~seisen/SelectedEventsBiologicalSciences.htm
THEODOR SCHWANN
(1810-1882)
German
physiologist/zoologist
 Formed cell theory with
Matthias Schleiden
 Published 'Microscopic
Investigations on the
Accordance in the Structure
and Growth of Plants and
Animals‘

http://www.takdangaralin.com/science/scientists/scientist-theodor-schwann/
RUDOLF VIRCHOW
Oct. 13, 1821 - Sept. 5, 1902
German pathologist and statesman,
one of the most prominent
physicians of the 19th century. He
pioneered the modern concept of
pathological processes by his
application of the cell theory to
explain the effects of disease in the
organs and tissues of the body.
http://www.britannica.com/EBchecked/topic/629797/Rudolf-Virchow
http://www.schools.utah.gov/curr/science/sciber00/7th/cells/sciber/cellhist.htm
AUGUST WEISMANN
Jan. 17, 1834 - Nov. 5, 1914
German biologist and one of
the founders of the science of
genetics, who is best known
for his opposition to the
doctrine of the inheritance of
acquired traits and for his
“germ plasm” theory, the
forerunner of DNA theory.
http://www.britannica.com/EBchecked/topic/639121/August-Friedrich-Leopold-Weismann
HANS AND ZACHARIAS
JANSSEN
•Dutch father and son
•Lens grinders
•Created the first
compound microscope
(with 2 lenses) in 1595
"History of Cell Discoveries." Utah State Office of Education - USOE Welcome. Web. 16 Aug. 2010.
<http://www.schools.utah.gov/curr/science/sciber00/7th/cells/sciber/c
ellhist.htm>.
ROBERT HOOKE
July 18, 1635 –
March 3, 1703
•English
•In 1665, he observed tiny,
hollow, room-like structures in
a thin slice of cork which he
called ‘cells’ because they
reminded him of the cells of a
monastery
•Only saw the outer walls
because they were not alive
"History of Cell Discoveries." Utah State Office of Education - USOE Welcome. Web. 16 Aug. 2010.
<http://www.schools.utah.gov/curr/science/sciber00/7th/cells/sciber/c
ellhist.htm>.
ANTON VAN
LEEUWENHOEK
Oct. 24, 1632 - Aug. 26, 1723
•Amateur scientist; originally a
fabric merchant
•Dutch
•Observed blood, rainwater and
scrapings of teeth through a
simple microscope with one lens
in 1680
•Observed living cells that he
called ‘animalcules,’ some of
which are now called bacteria
"History of Cell Discoveries." Utah State Office of Education - USOE Welcome. Web. 16 Aug. 2010.
<http://www.schools.utah.gov/curr/science/sciber00/7th/cells/sciber/c
ellhist.htm>.