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Watch Providers:
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One out of every 3 people in industrialized countries has some type of allergy to substances including pollen, animals and food. Up to now, experts have been unable to find a cure. But a new approach to treatment holds promise. It makes use of human cells called regulatory T-cells, or Tregs, that play a key role in suppressing allergies. On this program, we explore how Tregs are bringing hope to allergy sufferers.