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  1. Humans

    Letters from the July 15, 2006, issue of Science News

    People want to know “Sharing the Health: Cells from unusual mice make others cancerfree” (SN: 5/13/06, p. 292) reported that years ago it was discovered that certain male mice eradicate cancer cells and that white blood cells from these mice make normal mice cancer resistant. It also reported that it is superpremature to look forward […]

    By Science News
  2. Earth

    Asbestos fibers: Barking up a tree

    Sixteen years after a mine with asbestos-contaminated ore shut down, trees in the area still hold hazardous concentrations of wind-deposited asbestos.

    By Janet Raloff
  3. Health & Medicine

    Mad cow disease might linger longer

    A rare but deadly human illness spread by cannibalism has an incubation period in some individuals of about 4 decades.