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http://www.youtube.com/watch?v=78bWH2V-bes --- In proletar@yahoogroups.com, Habe Proletar <proletar4@...> wrote: > > fuck you and fuck any asshole like you,,, > > > ________________________________ > From: Bukan Pedanda <bukan.pedanda@...> > To: proletar@yahoogroups.com > Sent: Wednesday, May 15, 2013 10:13 AM > Subject: [proletar] BBC: Embryonic stem cells: Advance in medical human > cloning > > > >  > > FYI > > BBC News Health > > 15 May 2013 Last updated at 16:00 GMT > > Embryonic stem cells: Advance in medical human cloning > By James Gallagher Health and science reporter, BBC News > > Human cloning has been used to produce early embryos, marking a "significant > step" for medicine, say US scientists. > > The cloned embryos were used as a source of stem cells, which can make new > heart muscle, bone, brain tissue or any other type of cell in the body. > > The study, published in the journal Cell, used methods like those that > produced Dolly the sheep in the UK. > > However, researchers say other sources of stem cells may be easier, cheaper > and less controversial. > > Stem cells are one of the great hopes for medicine. Being able to create new > tissue might be able to heal the damage caused by a heart attack or repair a > severed spinal cord. > > There are already trials taking place using stem cells taken from donated > embryos to restore people's sight. > > However, these donated cells do not match the patient so they would be > rejected by the body. Cloning bypasses this problem. > > The technique used - somatic cell nuclear transfer - has been well-known > since Dolly the sheep became the first mammal to be cloned, in 1996. > > Skin cells were taken from an adult and the genetic information was placed > inside a donor egg which had been stripped of its own DNA. Electricity was > used to encourage the egg to develop into an embryo. > > However, researchers have struggled to reproduce the feat in people. The egg > does start dividing, but never goes past the 6-12 cell stage. > 'Real deal' > > A South Korean scientist, Hwang Woo-suk, did claim to have created stem cells > from cloned human embryos, but was found to have faked the evidence. > > Now a team at the Oregon Health and Science University have developed the > embryo to the blastocyst stage - around 150 cells - which is enough to > provide a source of embryonic stem cells. > > Dr Shoukhrat Mitalipov said: "A thorough examination of the stem cells > derived through this technique demonstrated their ability to convert just > like normal embryonic stem cells, into several different cell types, > including nerve cells, liver cells and heart cells. > > "While there is much work to be done in developing safe and effective stem > cell treatments, we believe this is a significant step forward in developing > the cells that could be used in regenerative medicine." > > Chris Mason, a professor of regenerative medicine at University College > London, said this looked like "the real deal". > > "They've done the same as the Wright brothers really. They've looked around > at where are all the best bits of how to do this from different groups all > over the place and basically amalgamated it. > > "The Wright brothers took off and this has actually managed to make embryonic > stem cells." > The ethical rival > > Embryonic stem cell research has repeatedly raised ethical concerns and human > eggs are a scarce resource. This has led researchers to an alternative route > to stem cells. > > The technique takes the same sample of skin cells but converts them using > proteins to "induced pluripotent" stem cells. > > However, there are still questions about the quality of stem cells produced > using this method compared with embryonic stem cells. > > Prof Mason said the field was leaning towards induced pluripotent stem cells: > "It has got a lot of momentum behind it, a lot of funding and a lot of > powerful people now." > > Dr Lyle Armstrong at Newcastle University said that the study "without doubt" > marked an advance for the field. > > But he warned: "Ultimately, the costs of somatic cell nuclear transfer-based > methods for making stem cells could be prohibitive." > > Dr David King, from the campaign group Human Genetics Alert, warned that: > "Scientists have finally delivered the baby that would-be human cloners have > been waiting for: a method for reliably creating cloned human embryos. > > "This makes it imperative that we create an international legal ban on human > cloning before any more research like this takes place. It is irresponsible > in the extreme to have published this research." > > BBC © 2013 The BBC is not responsible for the content of external sites. > Read more. > > > > > [Non-text portions of this message have been removed] > ------------------------------------ Post message: prole...@egroups.com Subscribe : proletar-subscr...@egroups.com Unsubscribe : proletar-unsubscr...@egroups.com List owner : proletar-ow...@egroups.com Homepage : http://proletar.8m.com/Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/proletar/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/proletar/join (Yahoo! ID required) <*> To change settings via email: proletar-dig...@yahoogroups.com proletar-fullfeatu...@yahoogroups.com <*> To unsubscribe from this group, send an email to: proletar-unsubscr...@yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
