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Discover the unit of the cell. While conducting an experiment with a half of a cork using a primitive compound microscope.
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He discovered the single-celled organism, bacteria. He discovered bacteria and protozoa while looking at pond water through a microscope. Disproved Hooke's theory because he realized that some cells are living organisms.
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Discovers the nucleus in the plant cells. During his stay in Australia he studied 1700 plant species. While looking at orchids under a microscope he saw an opaque spot on each of them this is how he discovered the nucleus of plant cells. His discovery enhanced Leeuwenhoek's model.
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Schwann defines the cell as the basic unit of animal structure. While having dinner with Schleiden they discussed plant and animal cells. From this discussion, Schwann discovers that animal cells have nuclei.
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He wrote that cells and their nuclei are the essential building blocks of plants beginning in the embryo. He added to cell theory and did not disapprove anything.
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He discovered that all diseases are caused by malfunctioning cells. He viewed a cell dividing under a microscope. He did not disaprove anything. He proved that all cells come from pre-existing cells.
