The Cell Theory began in during 1590s, in the Netherlands. When a spectacle maker named Zacharias Janssen invented the first compound microscope along with the first telescope.
Robert Hooke, was a person who adored all aspects of science and dabbled in a little bit of everything else. Robert Hooke created the well known scientific term "Cell" when he discovered a honeycomb-like structure in a cork using his own hand made compound microscope. He also saw that the cell walls were dead tissue.
Around the 1670s a Dutch tradesman and scientist Anton van Leeuwenhoek, made his own microscope to observe objects around his town. Then found a variety of single-celled organisms that moved. He called them "Animalcules" meaning little animals. Overall Anton van Leeuwenhoek invented his own microscope, discovered single-celled, and created the scientific word Animalcule.
The feud began after Issac newton published his first ground breaking book about how planets move due to gravity, around 1687. When Robert Hooke stated that Newton had copied some of his work in physics. And ever since then Newton despised Hooke even after his death. Newton stole some of Hooke's research and the only portrait Hooke owned, then hid them. But luckily, most of Hooke's possessions were recovered except for Hooke's portrait after Newtons death. Now no one will ever know what Robert Hooke looked like.
Around 1838, Matthias Schleiden discovered that all plant tissues he studied or viewed with a microscope were composed of cells. After some time he got snail mail from a Theodor Schwann. Then started working together on the beginning of The Cell Theory. The parts of the cell theory he helped put together and create were, cells are organisms and all organisms consist of one or more cells. And, the cell is the basic unit of structure for all organisms.
A year after Matthias Schleiden had his discovery of all plants have cells, Theodor Schwann demonstrated the same fact but for animal tissues. And in 1839 Schwann concluded that all tissues are made up of cells. After his discovery he tried to reach out other scientist that worked in the same field as him. Then began working of the beginning of The Cell Theory. The parts of the cell theory he helped put together and create were, cells are organisms and all organisms consist of one or more cells. And, the cell is the basic unit of structure for all organisms.
After years of trying to redeem the last part of the Cell Theory, the two scientist began to ague. Schwann thought "Cells came from preexisting cells" but Schleiden believed "Cells could spontaneously crystallize into existence." Then that was when Rudolph Virchow stepped in to stop the silly arguing and to state the correct answer "Cell come from other cells." Which proved Scheiden wrong.
After, Jewish scientist, Robert Remak discovered Virchow plagiarized some of his work, it led to another pair of feuding scientist. But not as extreme as Hooke and Newton.