Some allergy and asthma triggers, expected and unexpected – STLtoday.com


STLtoday.com

Some allergy and asthma triggers, expected and unexpected
STLtoday.com
This April 22, 2013 photo shows Maple trees which release a lot of wind-borne pollen while mold is produced by leaves littering the ground, In Langley, Wash. Allergies are caused by pollen from plants, trees, grasses, weeds and mold spores. (AP Photo
Experts: Brace for severe allergy seasonOneonta Daily Star

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