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  • News

    Surgical tool smokes out cancer in seconds

    A new tool could tell surgeons within seconds whether they are slicing through cancerous or healthy tissue. The tool, which analyzes smoke produced by electric currents used to cut or destroy tissue, was about 95 percent accurate in identifying cancers and other human tissues during surgery.

    Testing the smoke could help surgeons identify the outer margins of a tumor and remove as much of...

    07/18/2013 - 08:58 Technology
  • News

    Technique inactivates Down-causing chromosome

    Borrowing a trick from nature, researchers have switched off the extra chromosome that causes Down syndrome in cells taken from patients with the condition.

    Though not a cure, the technique, reported July 17 in Nature, has already produced insights into the disorder. In the long run it might even make the flaw that causes Down syndrome correctable through gene therapy.

    ...
    07/17/2013 - 12:53 Genetics
  • News

    Fattened livers prep white sharks for extreme migrations

    A white shark’s big fat liver, which can plump up to more than a quarter of an animal’s body weight, turns out to be the fuel tank for extreme migrations.

    White sharks (Carcharodon carcharias) in the eastern Pacific take a springtime swim from California to Hawaii and return in late summer. A one-way, 4,000-kilometer trip takes about a month.

    By combining data from two kinds of...

    07/17/2013 - 11:02 Animals
  • News

    Huge quakes may foretell smaller, human-caused ones

    Giant, distant earthquakes may help scientists identify places where humans are liable to set off smaller tremors when they inject fluid deep into geologic deposits.

    Scientists have known for decades that injecting huge volumes of liquid underground — such as waste from hydraulic fracturing, or fracking — can set off quakes. But in most cases it doesn’t, and scientists can’t predict when...

    07/12/2013 - 10:59 Earth
  • News

    Gene therapy treats children with rare diseases

    A virus derived from HIV can safely fix broken immune systems and correct genetic diseases, suggest two new studies involving children with rare conditions.

    For both studies, researchers put healthy genes into the children’s own DNA using lentiviruses, in this case genetically engineered versions of HIV that can no longer cause disease. Earlier gene therapy trials using different...

    07/11/2013 - 14:34 Genes & Cells