Allergen: a substance (such as a food or pollen) that your body perceives as dangerous and can cause an allergic reaction.
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 - TheAsthmaCuresAllergen: a substance (such as a food or pollen) that your body perceives as dangerous and can cause an allergic reaction.