When birch trees are grown in highly polluted areas, their pollen contains higher levels of the main allergen, according to Polish study - EurekAlert

When birch trees are grown in highly polluted areas, their pollen contains higher levels of the main allergen, according to Polish study - EurekAlert
When birch trees are grown in highly polluted areas, their pollen contains higher levels of the main allergen, according to Polish study
image: Birch trees.view more  Credit: Dorota Myszkowska, CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/) When birch trees are grown in highly polluted areas, their pollen contains higher l… [+1013 chars] Read More



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