Pollen: Pollen a fine, powdery substance released by plants and trees; an allergen.
Effective Asthma Management: Tips for a Healthier Home and LifestyleThe Asthma Cures - Easy Tips on Asthma - TheAsthmaCuresEffective Asthma Management: Tips for a Healthier Home and LifestyleThe Asthma Cures - Easy Tips on Asthma - TheAsthmaCuresPollen: Pollen a fine, powdery substance released by plants and trees; an allergen.