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  1. Health & Medicine

    Sperm just say NO to egg cells

    Sperm fertilizing an egg produce a whiff of nitric oxide.

    By John Travis
  2. Health & Medicine

    Marrow converted into brain cells

    Scientists can now efficiently transform bone marrow into nerve cells.

    By John Travis
  3. Health & Medicine

    Transplanted Hopes

    Islet-cell success may bring a diabetes cure closer.

    By Damaris Christensen

  4. 19326

    As a regular platelet-aphaeresis donor, I was alarmed by your article. I would be very curious to know if the standard tubing and centrifuge harness used for aphaeresis contain DEHP. During an aphaeresis session, roughly half the blood of the donor passes through a centrifuge to be relieved of platelets before being returned to the […]

    By Science News
  5. Earth

    New Concerns about Phthalates

    Boys may face an eventual reproductive risk from exposure to some of the ingredients that go into many common plastics, cosmetics, and medical supplies.