Over the last several years, few areas of medical look give way received as much attending as those divisions utilize to radical booth seek. Research has uncovered a post of omnipotent mobile ph superstars in legion(predicate) organisms that be contribute like embryotic jail carrels in that they have the ability to transform into many antithetic cell types. These cells control in injury repair, growth, and regeneration. Stem cell activity has been detect in many areas of the body including the digestive tract and lift marrow. Almost all post-natal argument cell formation occurs in the bone marrow. Here, a common macrocosm of stem cells (pluripotential hematogenic stem cells) gives rise to progenitor cells and forerunner cells that, when prompted by gilded levels of growth factors, transform into red blood cells or one of several types of leukocytes. In the lining of the picayune intestine and colon, the regenerative cells of the crypts of Lieberkuhn in the mucosa are responsible for cell replacement. Until recently, it was believed that cells of the nervous carcass did non participate in cell regeneration and replacement. However, as state by Gerd Kempermann and Fred Gage in New Nerve Cells for the handsome Brain, explore has uncovered that stem cells do function in neuron replacement. Â Â Â Â Â Â Â Â A long-time tenet was that neurons were not replaced if the cell died.
It was besides believed that a neuron could not repair itself if damaged. Kempermann and Gages article is centered on the long history of query devoted to disprove some(prenominal) o f these theories. As early as 1965, researc! h was being performed on rats to determine if neuron production existed. The research performed at MIT reported neurogenesis (neuron production) was found to occur in the rough gyrus sphere of the hippocampus. The hippocampus is the area of the brain associated with reminiscence and learning. In... If you want to induce a full essay, order it on our website:
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