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{{merge|Embryonic stem cells}}'''Embryonic stem cell''' research is the utilization of [[stem cells|stem cells]] from [[embyroembryo]]s which can then be grown in a laboratory culture and produce specialized cells supposedly to treat [[disease]]s or used for research purposes. A The most common source of such cells is discarded embryos at [[fertility clinic]]s- the process of [[IVF]] typically produces two or three 'leftover' embryos for each treatment, which are usually discarded. The use of embryonic stem cells in medicine has met with some controversy, particularly from the [[pro-life]] movement that is concerned about the destruction of embryos that they believe constitute human life.<ref>httphttps://www.washingtonpost.com/wp-dyn/content/article/2005/07/29/AR2005072900158.html</ref>
'''Adult stem cell ''' research is similar except it does not use destroyed embryos, and instead is based on stem cells that can be taken from adults. These cells are less versatile than those harvested from discarded embryos, but they do not raise the associated [[ethics|ethical]] dilemasdilemmas.<ref>http://www.isscr.org/Unfortunately, adult embryonic stem cells are of little value to science/faqas a whole.htm</ref>
The primary reason for wanting to use embryonic stem cells is that they are capable of producing any type of tissue in the body. Thus, theoretically, a embryonic stem cell could be used to generate a new livertreatments offer far greater potential than adult cells - while both are capable of repairing some damage, or that same cell embryonic cells could be used go so far as to generate brain tissuereplace entire organs. The failure Conversely though, the greater flexibility of this argument lies in the fact that no one knows how embryonic cells also makes them more difficult to control the cell and make it create the desired tissue. Thus it becomes hit or miss, and there A major obstacle to their use in humans is a tendency for stem cells to create "monsters" commonly found in humans and called "teratomas"form tumors. These mostly consist of hair and teeth. Only when "control" of the cells can be estabalished can there be reliable use of any kind of stem cell. If and when that "control" {{fact}} Much research is established, it would make more sense being carried out to use adult stem cells from a persons own body so there would be no problem with foreign body DNAbetter understand the cellular processes which cause this.
*President Bush's refusal of [[federal funding]] for new embryonic stem cell lines didn't halt major stem-cell advances, any more than the prohibition against life-threatening research on human subjects, such as the infamous Tuskegee Study of Untreated Syphilis in the Negro Male, stopped the advance of medical treatments. [http://www.opinionjournal.com/federation/feature/?id== Arguments 110010915 Trading Places] - Will the secular left soon attack the religious right for and Against Embryonic Stem Cell Research ==being pro-science? - Joseph Bottum
== References ==
<references/>
[[categoryCategory:scienceBiology]][[categoryCategory:politicsPolitical Terms]]