Smog Plus Pollen May Mean Even More Sneezing

March 22, 2015 1:00 PM

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SUNDAY, March 22, 2015 (HealthDay News) -- Certain air pollutants may boost the potency of a birch tree pollen that plays a big role in seasonal allergies, researchers say.

In laboratory tests and computer simulations, researchers found that two pollutants -- ozone and nitrogen dioxide -- have a significant effect on the pollen, called Bet v 1.

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