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Understanding the flexibility of T cell memory can lead to improved vaccines and immunotherapies. Juan Gaertner/Science Photo Library via Getty Images

Immune cells can adapt to invading pathogens, deciding whether to fight now or prepare for the next battle

When faced with a threat, T cells have the decision-making flexibility to both clear out the pathogen now and ready themselves for a future encounter.
When immune cells become overactive, your immune system itself can cause disease. NIAID/Flickr

Immune health is all about balance – an immunologist explains why both too strong and too weak an immune response can lead to illness

Dietary supplements claim to be able to ‘boost your immune system’ to combat disease. But attaining immune balance through a healthy lifestyle and vaccination is a safer bet to keep in good health.

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