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Sunflower sea star regenerates its arms. Regeneration in biology is the process of renewal, restoration, and tissue growth that makes genomes, cells, organisms, and ecosystems [ [Resilience (ecology)|resilient]] to natural fluctuations or events that cause disturbance or damage. [ 1 ] Every species is capable of regeneration, from bacteria to ...
The water vascular system of the starfish is a hydraulic system made up of a network of fluid-filled canals and is concerned with locomotion, adhesion, food manipulation and gas exchange. Water enters the system through the madreporite, a porous, often conspicuous, sieve-like ossicle on the aboral surface. It is linked through a stone canal ...
While most species require the central body to be intact in order to regenerate arms, a few tropical species can grow an entirely new starfish from just a portion of a severed limb. [2] Starfish regeneration across species follows a common three-phase model and can take up to a year or longer to complete. [2] Though regeneration is used to ...
Limb development. Development of the limbs. Illustration of a human embryo at six weeks gestational age. 9-week human fetus from ectopic pregnancy. Anatomical terminology. [ edit on Wikidata] Limb development in vertebrates is an area of active research in both developmental and evolutionary biology, with much of the latter work focused on the ...
Autotomy (from the Greek auto-, "self-" and tome, "severing", αὐτοτομία) or 'self-amputation', is the behaviour whereby an animal sheds or discards an appendage, [1] usually as a self-defense mechanism to elude a predator's grasp or to distract the predator and thereby allow escape. Some animals are able to regenerate the lost body ...
A study published Wednesday in the journal Science Advances, Michael Levin and his colleagues announced they were able to trigger the regrowth of legs in adult frogs.
Hox genes play a massive role in some amphibians and reptiles in their ability to regenerate lost limbs, especially HoxA and HoxD genes.. If the processes involved in forming new tissue can be reverse-engineered into humans, it may be possible to heal injuries of the spinal cord or brain, repair damaged organs and reduce scarring and fibrosis after surgery.
Epimorphosis. 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] Epimorphosis can be considered a simple model for development, though it only occurs in tissues ...