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The specific differences in the regeneration potential of different organs and explants have various explanations. The significant factors include differences in the stage of the cells in the cell cycle, the availability of or ability to transport endogenous growth regulators, and the metabolic capabilities of the cells.
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]
Reg expression has been associated with islet regeneration in pancreas [5] that may be important for islet transplantation and for diabetes therapy and for cancer studies. The mouse Reg1, Reg2, and Reg3δ, expressed by β-cells and acinar cells respectively, have been shown to be linked with pancreatic β-cell regeneration in the mouse by ...
Asexual reproduction, similar to regeneration following injury, requires neoblasts, adult stem cells, which proliferate and produce differentiated cells. [17] Some researchers claim that the products derived from bisecting a planarian are similar to the products of planarian asexual reproduction; however, debates about the nature of asexual ...
Cell culture, or in vitro studies, provide an alternative that preserves the physiology of the living cell, but does not require the sacrifice of an animal for mechanistic studies. Human, inducible pluripotent stem cells can [ citation needed ] also elucidate new mechanisms for understanding cancer and cell regeneration.
The egg cell is generally asymmetric, having an animal pole (future ectoderm).It is covered with protective envelopes, with different layers. The first envelope – the one in contact with the membrane of the egg – is made of glycoproteins and is known as the vitelline membrane (zona pellucida in mammals).
Immune system contribution to regeneration of tissues generally involves specific cellular components, transcription of a wide variety of genes, morphogenesis, epithelia renewal and proliferation of damaged cell types (progenitor or tissue-resident stem cells). However, current knowledge reveals more and more studies about immune system ...
A form of budding called suckering is the reproduction or regeneration of a plant by shoots that arise from an existing root system. Species that characteristically produce suckers include elm ( Ulmus ) [ 4 ] : 299 and many members of the rose family such as Rosa , [ 4 ] : 285–296 Kerria [ 4 ] : 206 and Rubus .