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Screening Tests For Breast Cancer Genes Just Got Cheaper
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Sequencing the genes of a cancer cell turns up lots of genetic mutations — but some of them are harmless. The goal is to figure out which mutations are the troublemakers. Kevin Curtis/Science Source hide caption

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Personalizing Cancer Treatment With Genetic Tests Can Be Tricky
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Biologist Rob Knight, co-founder of the American Gut Project, recently moved the project to the University of California, San Diego's School of Medicine. Casey A. Cass/University of Colorado hide caption

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Recent research sequenced 48 bird species, including (from left) the budgerigar, the barn owl and the American flamingo. (Left and center)iStock; (Right) Chris Minerva/Ocean/Corbis hide caption

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Birds Of A Feather Aren't Necessarily Related
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The Proton Semiconductor Sequencer from Ion Torrent Systems Inc. is a new DNA sequencing machine designed to sequence the entire human genome in about eight hours for $1,000. Ethan Miller/Getty Images hide caption

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Will Low-Cost Genome Sequencing Open 'Pandora's Box'?
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Sara Terry and her son, Christian, in Spring, Texas. After sequencing Christian's genome, doctors were able to diagnose him with a Noonan-like syndrome. Eric Kayne for NPR hide caption

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Doctors Sift Through Patients' Genomes To Solve Medical Mysteries
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Watson, now 84, says sequencing helped explain his past sensitivity to certain drugs. But he didn't want to know everything his sequenced genome revealed about his health future. Courtesy of Cold Spring Harbor Laboratory hide caption

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Scientists See Upside And Downside Of Sequencing Their Own Genes
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Slides containing DNA sit in a bay waiting to be analyzed by a genome sequencing machine. David Paul Morris/Bloomberg via Getty Images hide caption

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As Genetic Sequencing Spreads, Excitement, Worries Grow
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Human chromosomes like these contain genes and lots of other genetic material whose function has been a mystery. National Cancer Institute via AP hide caption

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Scientists Unveil 'Google Maps' For Human Genome
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