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Matthias Jakob Schleiden (German: [maˈtiːas ˈjaːkɔp ˈʃlaɪdn̩]; [1] [2] 5 April 1804 – 23 June 1881) was a German botanist and co-founder of cell theory, along with Theodor Schwann and Rudolf Virchow.
The book has been called "a conspicuous milestone in nineteenth century biology" by Karl Sudhoff and "epoch making" By Francis Münzer. [3] The book, originally published in German, was translated to English in 1847 by Henry Spencer Smith in an edition that also contained the treatise Phytogenesis, by Matthias Schleiden. [4]
From these conclusions about plants and animals, two of the three tenets of cell theory were postulated. 1. All living organisms are composed of one or more cells 2. The cell is the most basic unit of life. Schleiden's theory of free cell formation through crystallization was refuted in the 1850s by Robert Remak, Rudolf Virchow, and Albert ...
This was ultimately concluded by plant scientist Matthias Schleiden [5] and animal scientist Theodor Schwann in 1838, who viewed live cells in plant and animal tissue, respectively. [3] 19 years later, Rudolf Virchow further contributed to the cell theory, adding that all cells come from the division of pre-existing cells. [3]
The Cell Theory states that all organisms are composed of cells (Schleiden and Schwann), and cells can only come from other cells (Virchow). 1864 – Louis Pasteur disproved the spontaneous generation of cellular life. 1865 – Gregor Mendel demonstrated in pea plants that inheritance follows definite rules. The Principle of Segregation states ...
Nägeli and Hugo von Mohl were the first scientists to distinguish the plant cell wall from the inner contents, which was named the protoplasm in 1846. Nägeli believed that cells receive their hereditary characters from a part of the protoplasm which he called the idioplasma. [14] Nägeli was an advocate of orthogenesis and an opponent of ...
Light micrograph of a moss's leaf cells at 400X magnification. The following outline is provided as an overview of and topical guide to cell biology: . Cell biology – A branch of biology that includes study of cells regarding their physiological properties, structure, and function; the organelles they contain; interactions with their environment; and their life cycle, division, and death.
Ignaz Semmelweis was a Hungarian Obstetrician who began assisting Johann Klein at Vienna General Hospital's first two maternity clinics (also called a "lying-in wards") in 1846. [19] Semmelweis became concerned with the number of women dying from a febrile illness called puerperal fever . but it was colloquially referred to as "Childbed fever ."