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L orenz Oken, a proponent of natural science and philosophy, asserted that there are fundamental units of life, which he called "infusoria." His general ideas about the elemental structures of living organisms, though specifically incorrect, anticipated the subsequent identification of the cell and development of cell theory.
Microsoft Word - Total Cell Notes.doc. Cell I: Introduction to Cells and Prokaryotes: In 1805 Lorenz Oken made several statements that together make up the cell theory. Here are the four parts of the cell theory: All living things are made of cells. Cells are alike in structure and function.
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pp. 1711 - 1716. DOI: 10.1126/science.289.5485.1711. One of the most important ideas in the history of biology is the cell theory, which proposes that all forms of life are composed of cells. Cells are the simplest units to exhibit the functions characteristic of life, and the field of cell biology has helped reveal how the immense variety of ...
- Johannes Peter Müller
- Theodor Schwann
- Carl Rokitansky
- Rudolf Virchow
Johannes Peter Müller, who has become one of the most distinguished physiologists of Germany, was born in Koblenz into a shoemaker’s family on July 14, 1801. Educated in the faith of the Catholic Church, he entered a Latin seminary of the Jesuits. At first, Müller wanted to start a life path as a Roman Catholic priest. Nevertheless, he got interest...
Schwann was born in Neuss on the Rhine, a few miles from Cologne. He received an excellent training in mathematics and physics at the Jesuits College and started to study medicine in 1829. Schwann received his MD in 1834 in Berlin and learned anatomy, physiology, and general pathology from Johannes Müller (1801–1858). During these years spent under...
Rokitansky (Fig. 2) was one of the towering figures in the history of pathological anatomy. Karl Freiherr von Rokitansky was born on February 19, 1804, in Königgrätz (today Hradec Králové, Bohemia, Czech Republic) and died on July, 23, 1878, in Vienna, Austria. He studied in Prague and Vienna and started his career in the morgue of the Allgemeine K...
Rudolf Carl Virchow (Fig. 3) was born 1821 in Schivelbein (Pomerania, Prussia; now Świdwin, Poland) and moved up to be one of the most prominent pathologists and physicians of the 19th century. He pioneered the modern concept of diagnostic pathology and created the modern scientific paradigm by its application of cell theory to explain the effects ...
- Roland Sedivy
- roland@sedivy.net
- 2020
The CELL THEORY or cell doctrine, states that all organisms are composed of similar units of organization, called cells. The concept was formally articulated in 1839 by Schleiden & Schwann and has remained as the foundation of modern biology. The idea predates other great paradigms of biology including Darwin's theory of evolution (1859 ...
Oken, Lorenz (1779-1851) German naturalist who was a leader in the Naturphilosophie movement. Oken's views were mystical, including speculations on nothing, something, motion, God, and the geometric form of the universe. His prolific speculations, however, foreshadowed cell theory, as in the idea that all tissues were composed of a "fundamental ...
May 29, 2018 · Zurich, Switzerland, 11 August 1851) natural science, philosophy, scientific congresses. The son of poor farmers in the Black Forest, Oken studied at the universities of Freiburg, Würzburg, and Göttingen. In 1803, at the age of twenty-four, he published a system of, Naturphilosophie, thereby marking his adherence to the school of thought ...
