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400
spontaneous generation
Aristotle and other people believed that simple living organisms could come into being -
microscope invented
Jansen gave a device to see cells with -
believing in spontaneous generation
Jan Baptist van Helmont believed in this, he said if you put a rag over a pot of rice you will crete mice in 21 days -
Discovered cells
Robert Hooke (1635-1703) of Britain designed his own microscope and discovered matter made up of what he called cells. -
live cell under a microscope
The first man to witness a live cell under a microscope was Antony van Leeuwenhoek -
(protozoa) through a microscope
Leeuwenhoek reported he had observed “little animals” -
cells come only from other living cells
Louis Pasteur: Discovered that cells come only from other living cells -
The center of the cell seen
Robert Brown, discovered the nucleus in plant cells. -
advanced the cell theory for plants
Schwann did this, -
All living things made of cells
Theodor Schwann published "Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals," which included the first statement of the cell theory: All living things are made up of cells. -
Cell theory for animals
Theodor Schwann of Germany published cell theory as applied to animals. -
cell theory
the idea that cells are the basic unit of structure in every living thing. -
Applied cell theory to plants
This was the work of Matthias Schleiden -
all living cells must rise from pre-existing cells.
Rudolf Virchow extended the work of Schleiden and Schwann saying (above)
