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Robert Hooke's Discover
Robert Hooke discovers a honeycomb-like structure in a cork slice using a primitive compound microscope. He only saw the cell walls as this was dead tissue. Hooke didn't know the real structure nor function later to be discovered. Hooke's observations gave no indication of nucleus or any other organisms found in most living things. Hooke's findings were published in Micrographia. These findings are important because the dead tissue known as cell wall gave first manifestation for the cell theory. -
Anton Van Leeuwenhoek's Dicover
Leeuwenhoek is commonly known for his fine quality lenses in which he used for monocular microscopes. He used this lenses to build the first practical microscopes used for as what he called "seeing the invisible". Leeuwenhoek observed many things and in 1674 he was looking through his lenses and noticed "tiny little animals". This would be the year bacteria and protozoa was discovered. Leeuwenhoek's findings are better and important because the doors to what a cell was made were being opened. -
Robert Brown's Discover
Robert Brown contributed to the cell theory by showing the radicle's motion of molecules within a cell under the light of a microscope. The Brownian Method was named after Browns discovery of the way that molecules moved. Brown's other important discover was the nucleus. For Browns discovery of the cells nucleus is important because the nucleus contains genetic material and DNA in which is responsible for controlling and directing all cell activities. -
Matthias Jacob Schleiden
Schleiden loved working and studying plants and one day he realized that all plant tissues are composed of cells and that an embryonic plant arose from a single cell. He declared that the cell is the basic building block of all plant matter.This statement of Schleiden was the first generalizations concerning cells. He also recognized the importance of the cell nucleus, discovered in 1831 by the Scottish botanist Robert Brown, and sensed its connection with cell division. -
Theodor Schwann's Discover
In 1839 Schwann became familiar with Matthias Schleiden's microscopic research on plants.Pursuing his line of research on animal tissues, Schwann not only verified the existence of cells, but he traced the development of many adult tissues from early embryo stages. Schwann's ideas about cell theory were essential to expanding the idea of cellular structure into the animal world. Schwann's beneficial ideas show that cells are present in plants and animals and non-living organisms as well. -
Rudolf Virchow
Rudolf Virchow proposed that all cells result from the division of previously existing cells, and this idea became a key piece of modern cell theory. Virchow also founded the discipline of cellular pathology based on the idea that diseases do not affect an entire organism but are instead localized to certain groups of cells. Virchow was also the first to propose that diseased cells come from healthy cells. Virchow's discover made it easier to diagnose and treat diseases.
