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Spring rains washes away some pollen, but not all. Researchers have found tree pollen fragments can remain airborne for hours after a storm. The tiny pollen particles can exacerbate allergies because they can reach deep in the lungs.
Spring rains washes away some pollen, but not all. Researchers have found tree pollen fragments can remain airborne for hours after a storm. The tiny pollen particles can exacerbate allergies because they can reach deep in the lungs.