https://www.theguardian.com/society/2023/jan/25/pollution-may-make-birch-pollen-more-irritating-to-hay-fever-sufferers-study
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1/25/23 at 7:47pm
Organization
The Guardian
Author
Nicola Davis
Pollen from trees growing in heavily polluted urban areas has higher levels of Bet v1 allergen, experts find
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