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invent the microscope
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Robert Hooke uses microscope to look at a slice of cork. He names
the small box-like structures he sees "cells" -
improves the microscope and observes living cells for the first time.
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concludes that all plants are made of cells.
Schleidan and Schwan's research leads them to develop a theory about cells, which was:
All living things are composed of cells, The cell is the basic unit and structure of all living things and the well-being of an organism bepends on the well-being of its cells -
his investigations allow him to state that animals are also made of cells
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he expands the cell theory with the statement "cells come from pre-existing cells."
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they constructed the prototype electron microscope (invented earlier by physicist Leo Szilard).
