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  1. Health & Medicine

    New drug curbs rheumatoid arthritis in adults, children

    The experimental drug tocilizumab quells rheumatoid arthritis in adults and children by inhibiting an inflammatory compound called interleukin-6.

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  2. Health & Medicine

    Microbes weigh in on obesity

    The kinds of microbes living in an infant's gut may influence weight gain later in childhood.

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  3. High CO2—a gourmet boon for crop pest

    Relatively high concentrations of atmospheric carbon dioxide weaken soybean defenses against Japanese beetles.

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  4. Health & Medicine

    You, in a Dish

    Human cells grown in conditions that mimic life inside the body are beginning to replace lab animals for testing drug candidates and industrial chemicals.