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2,441 results

2,441 results for: mutations

  1. Evolving genes may not size up brain

    Two gene variants previously implicated in the evolution of human brain size apparently don't influence brain volumes in people today.

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  2. Animals

    Crickets on Mute: Hush falls as killer fly stalks singers

    Within just 5 years, singing has nearly died out among a population of cricket on a Hawaiian island.

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  3. 19649

    This article contained a very disturbing comment: “Neurologist Annette Langer-Gould of Stanford University says that even the 1-in-1,000 risk of PML [leukemia] ‘seems to outweigh the benefits’ that natalizumab would provide many patients.” Having a genetic mutation for which there is no treatment or cure and having (and having had) friends with MS, I am […]

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  4. Humans

    Science News of the Year 2007

    A review of important scientific achievements reported in Science News during the past year.

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  5. Faster, Cheaper, Better

    Methods now under development could make DNA sequencing quicker and less expensive, paving the way for the day when treatments can be tailored to each person's genetic profile.

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  6. Health & Medicine

    Fewer Drugs, Same Outcome: Simpler HIV regimens are effective

    In two studies, AIDS clinicians found that standard three-drug regimens fight HIV as well as four-drug treatments do, and that a single drug might maintain a patient's health once the virus is suppressed.

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  7. Earth

    Northern Refuge: White spruce survived last ice age in Alaska

    Genetic analyses of white spruce trees at sites across North America suggest that some stands of that species endured the harsh climate of Alaska throughout the last ice age.

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  8. Health & Medicine

    Targeted Attack

    Scientists are piecing together the details of how mutations in a protein called EGFR can lead to cancer, and they are designing a new class of drugs to stop the protein's destructive behavior.

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  9. Health & Medicine

    Next Line of Defense: New drugs take on resistant leukemia

    Two experimental drugs stop many cases of chronic myeloid leukemia that are resistant to the drug imatinib (Gleevec).

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  10. DNA Clues to Our Kind: Regulatory gene linked to human evolution

    A gene that exerts wide-ranging effects on the brain works harder in people than it does in chimpanzees and other nonhuman primates.

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  11. Health & Medicine

    Tumor’s border cells told to leave

    Cells on a tumor's outer layer that touch healthy tissue receive a chemical signal that sends them wandering away.

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  12. Cell death may spur aging

    Genetic mutations in cells' internal powerhouses could contribute to aging by stifling tissue maintenance.

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