A substance that can cause an allergic reaction. Common allergens include ragweed pollen, animal dander, and mold.

A substance that causes an allergic response. Examples include pollen, molds, and certain foods.

Immunostimulant antigenic substance which may or may not cause a clinically significant effect but which is capable of producing immediate hypersensitivity.

Any substance with the potential to produce an allergic reaction in an animal prone to such a reaction.

Substance (e.g., ragweed pollen) that can cause an allergy

substance causing allergy, 1912, from allergy on model of antigen.

A substance that produces an allergic reaction.

noun. a typically undamaging compound that is able of yielding an irregular immune reaction in an allergic person. Allergens come in the form of food, household dust particles, pet dander, plant polle [..]

substance causing allergy (pop)

A substance that can trigger an allergic reaction. Asthma can be triggered by dust mites, animal dander, mold, and cockroaches.

  An antigen that provokes an immune response.

The name given to an antigen that is capable of inducing the production of a specific type of antibody (IgE) in a very small percentage of people. Such individuals are prone to develop allergies. Comm [..]

A normally harmless substance, such as an ingredient in a foodstuff, that causes an (immediate) allergic reaction in a susceptible person.

Foreign proteins that can trigger a reaction from the immune system known as an allergy. An example is allergic rhinitis, also known as hay fever.

A substance that causes an allergic reaction. For example; dust, mold or dander.

A substance, usually a protein, that can cause an allergy or allergic reaction in the body.

Something that triggers an allergy.

a foreign substance to the body's immune system that may cause an allergic reaction.

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. Most common food allergens are nuts (especially peanuts), egg, milk, histamine, etc.

An allergen is a substance that is present in some food and which can cause illness, or in serious cases even death, when it is in contact with the skin or when it is eaten by people who are allergic to that substance.

(n) any substance that can cause an allergy

A substance such as fur, pollen, or dust that produces an allergic reaction.

An allergen is a medical word for anything that causes an allergic reaction. Allergens can be many different things, including grass, dust mites, or animal dander — the stuff that flakes off dogs' [..]

This descriptor may be used to any substance which produces an allergic reaction.

A substance that your body perceives as foreign and harmful; initiates the allergic reaction.

A substance that causes an allergic reaction in individuals sensitive to it.

A substance that causes an allergic reaction in individuals sensitive to it.

A substance, such as pollen or pet dander, that causes an allergy.

A substance foreign to the body that causes an allergic reaction.

An allergen is a substance capable of producing a reaction in people sensitive to allergens. In the case of people with asthma, allergens that are inhaled can trigger symptoms such as coughing, wheezing and shortness of breath. Allergens that may cause asthma symptoms include animal dander, dust mites, mold and pollen.

A substance that causes an allergic response. Examples include pollen, molds, and certain foods.

Allergens are proteins which trigger the immune system of an allergic person to produce unwanted symptoms. Examples include grass and tree pollens, house-dust mites and foods such as shellfish and cow [..]

A substance, usually a protein, that can cause an allergy or allergic reaction in the body.

any substance that produces an allergic response

Any material or substance the body can be over-sensitive to.

A substance, which can cause an allergic reaction.

An allergen is a substance that causes allergic reactions. Allergens include cedar pollen, dust, and mites, and food allergens such as eggs, shellfish, and buckwheat. Technically, the cedar pollen allergen is named Cry j 1; dust mite allergens are named Der p1/Der p2 for Dermatophagoides pteronyssinus and Der f 1/Der f 2 for Dermatophagoides farina [..]

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An allergen is a substance capable of producing a reaction in people sensitive to allergens. In the case of people with asthma, allergens that are inhaled can trigger symptoms such as coughing, wheezing and shortness of breath. Allergens that may cause asthma symptoms include animal dander, dust mites, mold and pollen.

A chemical or protein antigen that induces an allergic reaction. Allergens typically increase the plasma concentration of IgE which induces mast cells to release histamine.

Any substance, usually a protein, which is capable of inducing an allergy. For example: Peanuts are known to be an allergen

Allergen is a substance that causes an allergic reaction.

An allergen is something that produces an allergic reaction.

Any substance that induces an allergic reaction (immune response) in an organism. Primarily proteins, rarely sugars or fats.

An allergen is a normal substance that causes an acute defensive reaction in a person's immune system. Common allergens are pet dander, smoke, and pollen, although the list of possible allergens is long and varied. When a person has a reaction to an allergen that person is said to be allergic to it.

An allergen is a substance capable of causing an allergic reaction because of an individual's sensitivity to that substance.

A substance that causes an allergic reaction. It includes dust, pollen, pet hair and dander, dust mites, mildew, lint, fungus, most tobacco smoke, cooking grease and bacteria. Test.

A normal particle or substance which causes an acute defensive reaction in a person's immune system. Common allergens are pet dander, smoke, and pollen, although the list of possible allergens is [..]

<immunology> An antigenic substance capable of producing immediate type hypersensitivity reaction (allergy). (06 Oct 1997)

Substance (such as mold) that can cause an allergic reaction. (AIHA , 1996)

A substance that causes an allergic reaction. It includes dust, pollen, pet hair and dander, dust mites, mildew, lint, fungus, most tobacco smoke, cooking grease and bacteria.

A substance capable of causing an allergic reaction  because of  an individual’s sensitivity to that substance.

A substance that brings on an allergic reaction in human beings, such as pollen, fungus spores (mould, mildew), etc.

Allergen is a substance that causes an allergic reaction.

The AAFA states an allergen is any substance that triggers or causes an allergic reaction. Allergic reactions may include but are not limited to sneezing, running nose, itchy/watery eyes, nasal conges [..]

An allergen is a substance found in the indoor or outdoor environment that is normally harmless to most people. However, people that have a genetic or developed sensitivity to specific allergens will react to these normally innocuous substances as if they were harmful to their health, triggering a release of chemicals typically referred to as an al [..]

A chemical or biological substance (e.g., pollen, mold, animal dander, or house dust mite proteins) that induces an allergic state or reaction, characterized by hypersensitivity.

substance that causes allergic reaction.

Allergen is a substance that causes an allergic reaction.

A substance that causes the body to react hypersensitively to it.

(medicine) A substance which causes an allergic reaction. ''Pollen, dust, and spores are common allergens.''

Any substance that induces an allergy (mold, grasses, antibiotics, etc.).

A protein that induces an immediate (IgE) or late (cell mediated) allergic reaction.

An allergen is a type of antigen that produces an abnormally vigorous immune response in which the immune system fights off a perceived threat that would otherwise be harmless to the body. Such reacti [..]

An allergen is a type of antigen that produces an abnormally vigorous immune response in which the immune system fights off a perceived threat that would otherwise be harmless to the body. Such reacti [..]

Airborne contaminant that can induce an extreme reaction in a person who has an allergy to that substance. Typical Allergens are pollen, animal hair, skin particles and bed-mites and can be inhaled or just have skin contact. Anti-Histamines are the usual medication.