A natural or synthetic substance that in some people causes an abnormal, hypersensitive allergy reaction
This descriptor may be applied to any substance which produces an allergy (see below)
Any substance that causes an allergic reaction because the immune system recognizes it as "foreign" or "dangerous"
A food allergen is the part of a food (a protein) that stimulates the immune system of food allergic individuals A single food can contain multiple food allergens Carbohydrates or fats are not allergens
An allergen is a substance that causes an allergic reaction in someone. a substance that causes an allergy
A substance that causes allergic reactions in people that are allergic to it The allergens that cause asthma symptoms are typically airborne substances
A substance that your body perceives as dangerous and causes an allergic reaction
An allergen is any anitigen that causes allergy in a hypersensitive person Allergens are diverse and affect different tissues and organs Examples of allergens include pollen, fur, feathers, dust and mold
a substance (such as a food or pollen) that your body perceives as dangerous and can cause an allergic reaction
Something that causes an allergic reaction allergy A type of excessive immune system reaction to a substance in a person's environment (Can also be called "hypersensitivity reaction ") Allergies can be triggered by eating, touching, or breathing in an allergen Allergies are often associated with asthma, especially in children
Any substance that causes manifestations of allergy Among common allergens are inhalants, foods, drugs, infectious agents, contactants, and physical agents (CMD 1997)