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A perspective of cell theory and microscopy

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Melissa Harris

on 27 August 2016

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Transcript of A perspective of cell theory and microscopy

An American 20-Year-Old's life so far
1996
2016
elementary school
middle school
high school

UAB
Facebook launched
2004
Twitter launched
2006
Google
incorporated
1998
Barack Obama
president 2008
Donald Trump
runs for presidency
and Pokemon Go
released
2016
Osama bin Laden
killed 2011
iPod
2001
US housing crisis and
Great Recession
(2007-09)
9/11
Prince
(1958-2016)
ADELE 21
2011
iPhone
2007
Snapchat
initial 2011
Average American life span (80 yrs)
1936
1976
1956
Civil Rights
Movement
(1955-68)
JFK assassination
1963
first man on the moon
1969
TV becomes
popular
(late 1940s)
Microsoft
1975
WWII
(1939-45)
Atari 2600
1977
Prezi adapted from "Putting Time in Perspective" 2013 by Prezi Jedi
1865
Post Cival War Era
first car
1886
first
telephone
call
1876
basketball
invented
1891
UAB established
1969
first commercial
flight
1914
sinking of the Titanic
1912
1776
US history begins
George Washington
president
1789
American Cival War
1861-65
European colonization of the Americas begins
1492
Columbus makes first
voyage to the new world
1492
American Revolution
1775-1783
the discovery of the cell
and the birth of cell biology
1650
1850
Perhaps the first microscopic observations
Cesi and Stulluti,
Apiarium
and
Persio
, 1625 and 1630
Credited with some of the early ideas of spontaneous generation,
Aristotle,
The History of Animals
, 350 BCE

The father of microbiology discovers 'animalcules' or microorganisms,
Anton van Leeuwenhoek, mid to late 1600s
(image from MBOC, Alberts)
An alternative view to spontaneous generation,
Francesco Redi, (and many others e.g. Spallanzani 1700s), 1668
Designed the first achromatic lenses, improves microscopic resolving power
Joseph Lister, 1830s
The term 'cell' first coined from cork slices, looks like cellulae or little rooms
Robert Hooke,
Micrographia
, 1665
Credited with inventing the first compound microscope with two lenses
Cornelius Drebbel, 1619
Spontaneous Generation, an idea that survived a millenia:

"
So with animals, some spring from parent animals according to their kind, whilst others grow spontaneously and not from kindred stock; and of these instances of spontaneous generation some come from putrefying earth or vegetable matter, as is the case with a number of insects, while others are spontaneously generated in the inside of animals out of the secretions of their several organs.
"

The term 'nucleus' coined
Robert Brown, Letter to the Linnean Society, 1831
Development of 'The Cell Theory'
mid 1800s
images from http://vlp.mpiwg-berlin.mpg.de/people
“a single circular areola, generally somewhat more opake than the membrane of the cell... This areola, or nucleus of the cell as perhaps it might be termed, is not confined to the epidermis, being also found not only in the pubescence of the surface... but in many cases in the parenchyma or internal cells of the tissue”
Matthias Schleiden, botonist
suggested that every structural element of plants is composed of cells or their products
Theodor Schwann, zoologist
"the elementary parts of all tissues are formed of cells” and that “there is one universal principle of development for the elementary parts of organisms... and this principle is in the formation of cells”
Definative refutation of spontaneous generation
Louis Pasteur, 1859
Rudolf Virchow, father of pathology
"Omnis cellula e cellula"
All cells (come) from cells
3500 BCE
Year 1 AD
earliest evidence of writing
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