Cell Theory

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    Antoni Van Leeuwenhoek

    Lifespan.
    I chose this because he sent the Letter to the Royal Society
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    Robert Hooke

    Lifespan. I chose this because his book was the first important work devoted to microscopical observation.
  • Micrographia Was Published

    Micrographia Was Published
    Robert Hooke publishes Micrographia which became the first important work devoted to microscopical observation (This is also why I chose this).
  • Letter Sent to Royal Society

    Letter Sent to Royal Society
    Antoni Van Leeuwenhoek sent a letter to the Royal Society that the particles he saw under his microscope were living organisms. I chose this because this helped open up a lot of new investigations and discoveries.
  • Plants are Composed Of Cells

    Plants are Composed Of Cells
    Matthias Jakob Schleiden suggested that every structural element of plants is composed of cells or their products. I chose this because it revealed important information about plants and lead to the same discovery for animals.
  • Animals are Composed of Cells

    Animals are Composed of Cells
    After Schleiden's conclusion about plants, the same conclusion was made about animals the year after by Theodor Schwann. I chose this because it shows a similarity between plants and animals and it was discovered the year after Schleiden's discovery.
  • Deiters' Book

    Deiters' Book
    A posthumously published book by Karl Deiters contains descriptions and drawings of nerve cells. I chose this because it was studied by using histological methods and microdissections made with tiny needles under a microscope which I thought was cool.
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    Microscopy Improvements

    The development of the microtome technique and the use of new fixing methods and dyes helped to greatly improve microscopy. I chose this because the development of microscopy is important to cell theory.
  • Mitosis

    Mitosis
    Walther Flemming introduced the word "Mitosis." and gave a description of its various processes. I chose this because mitosis is an important vocabulary word when learning about cells.
  • Ergastoplasm (Endoplasmic Reticulum)

    Ergastoplasm (Endoplasmic Reticulum)
    The term "Ergastoplasm" was introduced in 1897. I chose this because "Ergastoplasm" isn't a known word, but it is an important one.