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A Dutch naturalist who first discovered and identified microorganisms.
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an English physicist who was also a distinguished microscopist
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Micrographia was the first important work devoted to microscopical observation, and
showed what the microscope could mean for naturalists -
The particles that he saw under his microscope were motile and,
assuming that motility equates to life, he went on to conclude, in a letter of 9 October 1676 to the Royal Society, that these particles were indeed living organisms. -
The abbot Felice Fontana glimpsed the nucleus in epithelial cells in 1781
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The Scottish botanist Robert Brown was the first to recognize the nucleus, a term that he introduced, as an essential constituent of living cells
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the botanist that suggested every structural element of plants is composed of cells or their products
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The zoologist concluded that animals are also composed of cells, like plants
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They allow more precise histological observations. Improvements were also made in tissue preservation and -treating techniques. -
Lead to the discovery that the nucleus is essential to cell life -
This discovery lead to the formulation of cell theory -
Theodore Schwann stated “there is one universal principle of development for the elementary parts of organisms... and this
principle is in the formation of cells", which lead to the official formulation of the cell theory -
A biologist who identified the structed within the nucleus
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Walther Flemming who also introduced the term ‘‘mitosis’’ in 1882 and gave a superb description of its various processes. This process was also observed in plants, providing further evidence of the deep unity of the living world.