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(Medical Xpress) -- Johns Hopkins researchers have developed a way to stimulate a rat’s stem cells after a liver transplant as a means of preventing rejection of the new organ without the need for lifelong immunosuppressant drugs. The need for anti-rejection medicines, which carry serious side effects, is a major obstacle to successful long-term transplant survival in people. With a combination of a very low, short-term dose of an immunosuppressive drug to prevent immediate rejection and four doses of a medication that frees the recipient’s stem cells from the bone marrow to seek out and populate the donor organ, the...

Human eggs which could grow into embryos have been created in a laboratory for the first time, scientists announced yesterday. They were created by scraping stem cells off the surface of ovaries and exposing them to a chemical which stimulated growth. The breakthrough suggests limitless supplies of eggs could be grown, solving the problem of the acute shortage of donor eggs for infertile women wanting IVF treatment. But the idea has horrified pro-life groups after scientists admitted they could use the technique to 'farm' embryos for their research. The procedure was tested by a University of Tennessee team, which took...