Cell theory, developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that cells are the fundamental unit of structure and function in all organisms, and that all cells come from pre-existing cells. Organisms are broadly grouped into eukaryotes and prokaryotes. Cells consist of a variety of internal and external structures that perform specialized functions necessary for survival and reproduction. These components vary depending on whether the cell is prokaryotic or eukaryotic, and whether it belongs to a plant, animal, fungus, or protist. Medical Xpress: How a tiny cell structure may shape brain development and drive disease A largely overlooked structure inside our cells may play a crucial role in how the brain forms, offering new insight into developmental disorders and potential therapies. In a study published in Cell ... How a tiny cell structure may shape brain development and drive disease For related background details, please refer to our report on wiring a turn signal flasher. Cell publishes findings of unusual significance in any area of experimental biology, including but not limited to cell biology, molecular biology, neuroscience, immunology, virology and microbiology, cancer, human genetics, systems biology, signaling, and disease mechanisms and therapeutics. Discover exclusive editorial curations on research trends, insights, and events from the Cell Press chemistry portfolio all in one place, with new content added regularly. cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature.

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