Common hazel, source of pollen alergy

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Photo credit: © Henri Koskinen / Alamy / Afripics
License: Royalty Free
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Keywords: allergen, allergenic, allergic, allergy, avellana, bloom, blooming, blossom, branch, bud, buds, catkin, catkins, common, corylus, diseases, female, finland, flower, flowering, hazel, hazelnut, histamine, immune, male, pollen, shrub, system