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Geneticists, pharmacologist and mathematicians combine their powers to answer one of the most vexing questions in modern oncology: Why don't anti-cancer drugs always work?
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Law enforcement officials say they have a "familial match" from DNA that links Albert DeSalvo, who confessed to being the serial killer, to the final murder. They say the new certainty stems from advances in DNA testing.
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A few dog breeds indigenous to North America have genetic roots on the continent that stretch back 1,000 years or more. A study finds that their genetic lineages haven't changed much, despite an influx of European pooches.
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Scientists in Siberia say they've extracted blood samples from the carcass of a 10,000-year-old woolly mammoth, leading to speculation that a clone of the extinct animal might someday walk the earth. But researchers say the find must be studied further to know its potential.
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Some families with a history of schizophrenia share genetic variants on one brain pathway, a study finds. And the family members with schizophrenia are more likely to share symptoms. This may help researchers decipher the frustratingly complex genetics of schizophrenia.
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Inherited mutations of some genes can contribute to breast cancer risk. There are tests for a range of these uncommon mutations, but whether an insurer will pay for them varies, too.
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Biologists said last week that they had overcome a major obstacle in stem-cell research by cloning human embryos. But several images in the published study were duplicated and labeled incorrectly, prompting questions about the authenticity of the results.
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The news that scientists have successfully cloned a human embryo seems almost certain to rekindle a political fight that has raged, on and off, since the creation of Dolly the sheep. It's a fight that has, over the past decade and a half, produced a lot of heat and light and not a lot of policy.
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After decades of trying, scientists say they've finally figured out how to make personalized embryonic stem cells. One day, these designer cells may help treat an array of diseases. A jolt of caffeine and and a little electric shock helped to do the trick.
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The achievement is a long-sought step toward harnessing the potential power of such cells to treat diseases. But the discovery raises ethical concerns because it brings researchers closer to cloning humans.