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There's widespread confusion and fear among scientists and doctors on the sprawling National Institutes of Health campus and at institutions dependent on the agency's funding.

Bird flu has decimated poultry flocks and infected cattle herds. The risk to humans is currently low, but that could easily ...

Mitochondria, often seen as cellular powerhouses, play a surprising role in immune regulation. Researchers found that ...

Hives, also known as urticaria, are raised, itchy welts on your skin that occur due to an allergen. The reaction is uncomfortable, but it’s often not serious.