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Janssen invents first microscope.
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Helmont who supported spontaneous generation. He even went as far to make a recipie for mice. You add wheat to clothes and wait 21 day.
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Hooke observed cork cels through a microscope describing them as minuature prison cells.
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Leewunhook discovered Protoza through a microscope.
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Oken proposes that "all organic beings originate from and consist of cells."
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Discovered the nucleus of a cell. And stressed its importance to fertilization.
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First introduced the idea that everything is composed of cells.
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First to recognize luekemia cells.
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Helped create the original cell theory. Later published a book on applying cell theory to plants.
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suggested sudden changes in evlution as opposed to gradual change.
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Later recreates the soup eperiment, with the expiriment he proves that bacteria in form in dust, and that spontaneous generation is false.
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The Ion Microscope s invented allowing for in depth veiws of cells and the structures within.
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Aristotle classified all life as plants or animals.