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Robert Hooke
Hooke found the cell theory in 1653. Hooke's method was looking at a thin slice of cork through a microscope at 50x, Hooke only saw the cell walls as dead tissue. He called them "cells" for the individual compartments he saw -
Anton Van Leewenhoek
Leeuwenhoek looks at pond water with his own microscope he created lenses for. He discovered the "protozoa" a single celled organism and called them "animalcules". He also discovered the fiirst bacteria. Leeuwenhoek built off of Hooke's theory. -
Robert Brown
Robert Brown introduced his first paper on cells in November 1,1831, in a paper to the Linnean Society and was published in 1833. During then he did not realize that cell nucleus was present in cells other than plants. Robert Brown was a botanist who studied aspects of plant life, from the way that plants grow to things like how their cells work together. This was the first discovery of the nucleus. -
Matthias Schleiden
Stated that plants grew by adding new cells. He used a microscope to study plants. Schwann later extended this theory to animal tissues. -
Theodor Schwann
Schwann proposed three generalizations concerning the nature of cells: First, animals and plants consist of cells plus the secretions of cells. Second, these cells have independent lives, which, third, are subject to the organism's life. Schwann realized the viewed and stated that new plant cells formed from the nuclei of old plant cells. Schwann then declared "All living things are composed of cells and cell products". This became cell theory or cell doctrine. -
Rudolf Virchow
Stated that all cells resulted from the division of previous cells. Also introduced cell pathology, stating that diseases do not affect the entire organism, only a specific group of cells, which made it easier to diagnose and treat illness..