Humans

  1. Health & Medicine

    Virulent bacterium’s DNA is sequenced

    The completed genome sequence of Staphylococcus aureus reveals transfers from other organisms of many of the antibiotic-resistance and virulence genes.

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  2. Health & Medicine

    Death of a theory

    Three separate analyses of oral polio vaccine used in the 1950s in Africa deflate the theory that such a vaccine could have ignited the AIDS epidemic by containing virus-infected chimpanzee cells.

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  3. Health & Medicine

    Gene therapy cures blindness in dogs

    Gene therapy to replace a defective RPE65 gene succeeds in bringing sight to three blind dogs, suggesting such therapy might reverse Leber congenital amauosis, a rare condition in which children are blind from birth.

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  4. Health & Medicine

    New anthrax treatment works in rats

    By distorting a protein in the toxin that makes the anthrax bacterium deadly, scientists have discovered a promising way to treat the disease and possibly even to prevent it with a vaccine.

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  5. Health & Medicine

    Tamoxifen dilates arteries in men

    The breast cancer drug tamoxifen can widen a narrowed coronary artery in men with heart problems.

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  6. Health & Medicine

    Long-term ecstasy use impairs memory

    Extended use of the illicit drug called MDMA or ecstasy exacerbated memory problems in users aged 17 to 31, none of whom reported alcohol dependence.

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  7. Health & Medicine

    Peptide puts mouse arthritis out of joint

    A compound called vasointestinal peptide, which binds to immune system T cells and macrophages, thwarts arthritis in mice.

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  8. Health & Medicine

    Epileptic seizures may be predictable

    Patterns of mild electrical disturbance in the brains of epilepsy patients appear to foreshadow a seizure hours before its onset.

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  9. Health & Medicine

    Anthrax Threat

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  10. Health & Medicine

    Novel typhoid vaccine surpasses old ones

    A new vaccine links a sugar molecule found on the surface of the bacterium that causes typhoid fever with a genetically engineered version of the exotoxin protein, which arouses the immune system to churn out antibodies against the bacterium.

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  11. Anthropology

    Peru Holds Oldest New World City

    Construction of massive ceremonial buildings and residential areas at a Peruvian site began 4,000 years ago, making it the earliest known city in the Americas.

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  12. Health & Medicine

    Germ-killing plastic wrap

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