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rediA thought that organic matter can create living organisms from inanimate objects. This was beilved by most people in the middle ages up until the 19th century . Francesco Redi dissporved this theory.
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Zacharias Jansen and his father experimenting with some lenses. They then made the microscope. Then later dicovered that it enlarged the image a maximum of 9x.
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helmontJan Baptist van Helmont first one to identify the air of being made up of diffrent gases.
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hookeRobbert Hooke discovered the cell. While looking at a cork he saw empty spaces and he called them cells.
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<a href='http://www.ucmp.berkeley.edu/history/leeuwenhoek.html' >Anton van Leeuwenhoek cleared the lenses to improve the image.
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lwUsing the microscope Leeuwenhoek improved, he was the first to observe single-celled organisms.
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rbUsing the microscope, Brown made significant discoveries on the nucleus and cyloplasm.
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Lorenz Oken came up with a new system of animal classification that displayed the path of evolution.
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Matthias Schleiden and by Theodor Schwann came up with this idea which was the theory that cells form the fundamental structural and functional units of all living organisms.
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<a href='http://scienceworld.wolfram.com/biography/Schleiden.html' >Matthias Schleiden also known as the other cofownder of the cell theory, discovered that calls were also in plants.
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<a href='http://scienceworld.wolfram.com/biography/Schwann.html' >Theodore Schwann applied the previous cell theory to animals and found that all mature animal tissue is composed of embryonic cells.
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<a href='http://www.newadvent.org/cathen/07212b.htm' >Jan Baptist van Helmont documented the connection between nerve fibers and the groups of cells they are attatched to.
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Rudolph Virchow's major contribution was finding that not the entire organism gets sick, only a certain group of cells and also said that every cell comes from other cells.
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<a href='http://www.historylearningsite.co.uk/louis_pasteur.htm' >Louis Pasteur had break throughs on the immune system and vaccinations and also invented Pasteurization, a process to stop food and liquid from making people sick.
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aristotleAristole first theory was that all living things are made of cells.
