The Cell Theory Development
By : Phong Nguyen
Anton Van Leeuwenhoek
Leeuwenhooke is known for the improvement of the microscope, which he later used to study pond water, sour milk, and semen; through these studies, he was able to discover moving molecules, later known as "animalcules".
Leeuwenhoek
Drawings of animalcules
Robert Hooke
Hooke contributed to Christopher White's microscope, aside from Leeuwenhooke, and was able to make observations off of cork, a type of tree bark; he discovered a structure in the tree bark that he later named "cell" because the structure looked as if it were the rooms monks lived in.
Robert Hooke
Microscope
Felice Fontana
Fontana later researched into cells, specifically eel cells, to find that every cell had what contained something oval; this was later known as the nucleus.
Felipe Fontana
Nucleus
Robert Brown
Brown is known for Brownian Motion, the random movement of particles in fluids; this observation occurred when Brown was looking at grains floating, which he further went to find minute particles, such as amyloplasts and spherosomes.
Felix Dujardin
Dujardin studied microscopic animals; this later found a new group he proposed to be named "rhizopoda", which later became "protozoa", as well as studying invertebrates.
Matthias Schleiden
Schleiden took part in the founding of the cell theory with Schwann and Virchow; he helped in the evidence for, "all things are made up of cells" and "all cells come from existing cells".
Matthias Schleiden
Cell reproduction
Theodor Schwann
Schwann put in his contribution to the cell theory with Schleiden and Virchow by discovering the cells in organisms, which also created the term metabolism.
Theodor Schwann
Make up of cells
Rudolph Virchow
Virchow took the work of Robert Remak and came up with the discovery of, all cells come from cells in 1855, which built on the work of Theodor Schwann.
Rudolph Virchow
Cell theory
Ernest McCulloch
McCulloch was a cell biologist who discovered stem cells, cells that can grow, with Till; this discovery led to the ability to do regenerative replacements.
Ernest McCulloch
Regenative cells
James Till
Till, partners with McCulloch, discovered the stem cell by testing the theory; he injected some cells, that were regenerative into mice that were exposed to radiation.
James Till
Rat experiment
Lynn Margulis
March 5, 1938
Margulis was a biologist who revolutionized the concept of how life was created on this Earth; she did this by using her theory of eukaryotic cell development.