Search Results for: mutations

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2,456 results

2,456 results for: mutations

  1. 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).

    By Nathan Seppa

  2. 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.

    By Bruce Bower

  3. Cancer gene is also important for growth

    A certain tumor-suppressing gene appears to also control development in immature animals.

    By Christen Brownlee

  4. Mutation blocks fat absorption

    A newly discovered gene in zebrafish seems to prevent the animals from absorbing fat molecules from their diets.

    By Christen Brownlee
  5. Health & Medicine

    Defect Detector: Plugging holes in a breast cancer–gene screen

    A genetic test not available in the United States catches many potentially cancer-causing BRCA-gene mutations not detected by the sole U.S. test.

    By Nathan Seppa
  6. Anthropology

    Evolution persisted in agricultural era

    Natural selection has continued to propagate survival-enhancing gene variants in human populations over the past 10,000 years, according to a new genetic analysis.

    By Bruce Bower
  7. Chemistry

    Spore-detecting diving board

    Researchers have demonstrated a new way to detect bacteria.

    By Aimee Cunningham
  8. Animals

    Poor Devils: Critters’ fights transmit cancer

    Tasmanian devils transmit cancer cells when they bite each other during routine squabbles, producing lesions that are often fatal.

    By Carolyn Gramling
  9. 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.

    By Christen Brownlee
  10. Health & Medicine

    Defenses Down: Mutation boosts West Nile risk

    A genetic mutation has been identified that increases a person's susceptibility to West Nile virus.

    By Nathan Seppa

  11. Robo Receptor: Researchers engineer a brain ion channel to take its cues from light

    Scientists have engineered an ion channel in nerve cells to open or close in response to light.

    By Aimee Cunningham
  12. Health & Medicine

    Mixing Vessel: Air pollution helps cholesterol clog arteries

    When paired with a diet high in fat, breathing polluted air on a regular basis accelerates the accumulation of dangerous plaques in arteries.

    By Ben Harder