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Aristotle gave ideas and principles on the cell theory. started this in 424 B.C
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Jan Baptista van Helmont discovered discrete gases and carbon dioxide
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Anton van Leeuwenhoek was the first to see and describe bacteria and yeast plants and more!
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Lorenz Oken made a contribute to all organic beings originate from and consits of vesicles and cells
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Schleiden 1832 began studying medicine in Göttingen
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Robert Brown was a Scottish botanist and palaeobotanist who made important contributions to botany largely through his pioneering use of the microscope.
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Theodor Schwann comes up with the Development of cell theory
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Albert von Kölliker wrote papers on animals and the most varied kinds.
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Louis Pasteur was a French chemist and microbiologist who is well known for his discoveries of the principles of vaccination, microbial fermentation and pasteurization. He is remembered for his remarkable breakthroughs in the causes and preventions of diseases, and his discoveries have saved countless lives ever since.
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Rudolf Virchow was a german docter who discovered cell theory
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Janssen invented the first compound microscope
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Robert Hooke In 1665 he inspired the use of microscopes for scientific exploration with his book, Micrographia. Based on his microscopic observations of fossils,