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The four types of regeneration are epimorphosis, stem cell mediated regeneration, morphallaxis, and compensatory regeneration (compensatory hyperplasia). Epimorphosis occurs when other adult cells in a damaged tissue undergo dedifferentiation and then divide to form an undifferentiated mass of tissue, this new mass encompasses the mass of ...
Sunflower sea star regenerates its arms. Dwarf yellow-headed gecko with regenerating tail. Regeneration in biology is the process of renewal, restoration, and tissue growth that makes genomes, cells, organisms, and ecosystems resilient to natural fluctuations or events that cause disturbance or damage. [1]
The surviving epithelial cells, however, undergo migration, dedifferentiation, proliferation, and redifferentiation to replenish the epithelial lining of the proximal tubule after injury. Recently, the presence and participation of kidney stem cells in the tubular regeneration has been shown.
Thus, dedifferentiation displays the ability of regeneration in the absence or scarcity of stem or progenitor cells. Recent studies discovered macrophages as an initial factor that contribute to the dedifferentiation of the cells in the site of injury and promote the formation of the progenitor cell pool during limb regeneration in the salamander.
Timing is important to wound healing. Critically, the timing of wound re-epithelialization can decide the outcome of the healing. [11] If the epithelization of tissue over a denuded area is slow, a scar will form over many weeks, or months; [12] [13] If the epithelization of a wounded area is fast, the healing will result in regeneration.
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Epimorphosis is defined as the regeneration of a specific part of an organism in a way that involves extensive cell proliferation of somatic stem cells, [1] dedifferentiation, and reformation, [2] as well as blastema formation. [3]
South Carolina (5-3, 3-3 SEC) never trailed after that. The Aggies (7-2, 5-1, SEC) entered the game as just 2.5-point favorites and started Marcel Reed at QB.