Dr. Michael West, of Advanced Cell Technology in Worcester, Massachusetts and his team have created a monkey embryo without the use of sperm that can be used to create stem cells. Through a process called parthenogenesis, stem cells were extracted from the embryo to make specialized tissues such as heart and brain material. ?These were fully developed cells that could have been used medically,? he says.

He and his colleagues used chemicals to cause a monkey egg to turn into an embryo that was allowed to grow to six cells. West says it may be possible to make human embryonic stem cells this way. Other experts say that this technique would work only with women of reproductive age who could provide the eggs and thus would not benefit males.
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A stem cell has been found in adults that can turn into any tissue in the body. Until now, only stem cells from early embryos were thought to have such properties. If the finding is confirmed, it will mean cells from your own body could one day be turned into all sorts of perfectly matched replacement tissues and even organs.
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PPL Therapeutics of Edinburgh, Scotland has cloned 5 pigs with ?knock out? genes, meaning that their organs can be transplanted to humans. They were born on Christmas day and are named Noel, Angel, Star, Joy and Mary. They contain special genes prevent the human immune system rejecting their transplanted organs.

PPL cloned the piglets with help from the scientists who cloned Dolly the sheep in 1997.The company has also successfully introduced human DNA into animals such as cows, which then produce proteins in their milk which can be used in human medicine.
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The scientists at Advanced Cell Technology, in Worcester, Massachusetts, claim they have cloned the first early human embryo. They want to create genetically matched replacement cells for patients with a wide range of diseases, and say they have no interest in transplanting these embryos into a woman?s womb to give birth to a cloned human being.
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