Substances which cause allergic reactions These may be plant pollens, dust mites, animal dander, foods, insect venom, antibiotics or substances such as latex and rubber
substances that cause manifestations of allergy (these may or may not be antigens)
Substances that activate the immune system and cause an allergic response; may not be directly antigenic themselves but may make other materials antigenic
substances that trigger allergic reactions or asthma attacks, such as dust mites, pollen, molds, pet dander, cockroach debris, and some foods or medications
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
A substance that causes allergic reactions in people that are allergic to it The allergens that cause asthma symptoms are typically airborne substances
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
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)