an antigen that evokes a hypersensitivity reaction
A substance which causes an immune response.
A substance (antigen) capable of producing immediate-type hypersensitivity (allergy).
A substance that causes an immune response.
Substance that can induce an allergic reaction or specific susceptibility.
a substance which causes an allergic reaction in humans. It is usually a protein whose presence stimulates the body to form IgE antibodies. Common allergens are pollen, house dust and animal hairs.
a substance that produces an allergic reaction.
a substance which elicits an allergic reaction. The most common allergens are various types of pollen, molds, house dust mites, animal hair and skin, and hymenoptera venom. Most of these common allergens contain a whole set of different antigens*.
(also "Antigen"): Any substance that, as a result of coming in contact with appropriate cells, induces a state of sensitivity and immune responsiveness after a latent period (days to weeks)...So an "allergy" is a response -- sometimes a harmful autoimmune response -- to a particular antigen or to a group of antigens.
A substance that your body perceives as foreign and harmful; initiates the allergic reaction.
Antigenic substance capable of producing immediate hypersensitivity. RT allergy, antigen, hypersensitivity.
a substance that induces the hypersensitive state of allergy and stimulates the formation of E-antibodies.
Something--including biological material such as fungi, mold, spores, insect parts, skin flakes, and chemical compounds--which causes an allergic reaction.
A protein substance that may provoke an allergic response in a susceptible person. Common allergens include house-dust mite faeces, grass pollen and cat dander
When an antigen induces an allergic reaction, it's called an allergen. The threshold at which an allergic reaction occurs is different for every person.
any substance that triggers an allergic reaction. Examples of allergens: pollen, dust mites, animal dander, molds, latex, insect venom and certain foods. Allergic reaction: a reaction to a substance (allergen) such as pollen, mold, dust mites, pet dander, food or medication, in a sensitized person. When an allergen enters the body, the immune system releases chemicals such as histamine. These chemicals are responsible for the sneezing, runny nose, itchy eyes, hives, swelling, shortness of breath, wheezing and other signs and symptoms of allergies.
is any substance capable of causing an allergy. (The definition sort of goes round in circles doesn't it?)
Any substance, such as pollen, mold or animal dander, that can trigger allergic response in humans and pets.
An allergen is something that produces an allergic reaction.
A substance capable of causing an allergic reaction in an individual due to their sensitivity to that substance.
a compound causing the reaction
a foreign substance in the air that causes or triggers (sets off) an abnormal reaction in the eye
a material that is capable of provoking an allergic reaction, such as pollen grains, dust mites or foods
a material which is capable of provoking an allergic reaction such as a pollen grain dust particle or animal dander
a medical word for anything that causes an allergic reaction
an allergy-causing trigger, such as pollen, dust mites, and animal dander
an antigen, principally a protein, which can elicit symptoms of allergic disease in a previously sensitized individual
an antigen that stimulates the production of IgE antibodies, although low titres of IgG molecules are also formed
a nasal spray longer cause drowsiness
a particle, like tree pollen or pet dander, that is inhaled, ingested, or absorbed through the skin and causes an allergic reaction
a protein that people react to, and can cause reactions ranging from itching to upset stomach to death," said Dr
a special type of antigen that causes an IgE antibody response
a specific antigen to which a person is allergic Antihistamines These are drugs that block the action of histamine at its receptor sites
a specific substance, often a plant or animal-related protein, with respect to which a child may potentially develop sensitivity and/or allergic symptoms
a specific type of antigen that triggers an immune or allergic response in a sensitized individual
a specific type of antigen, which sets in motion a hypersensitive, or allergic reaction
a substance that causes an allergic response
a substance that causes the allergic reaction
a substance that initiates the allergic response
a substance that sets off an allergic reaction
a substance that your body perceives as dangerous, but which a non-allergic person's body ignores
a trigger that causes the reaction after touching a certain part of the body
a type of antigen that causes an exaggerated response
Any substance that induces an allergy (mold, grasses, antibiotics, etc.).
A substance that causes sensitivity and the release of antibodies and histamine typically causing itching and sneezing.
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.
Any substance to which a person is allergic (for example, pollen, house dust mite droppings, animal dander, peanuts).
A protein that induced the formation of an IgE.
a substance that causes the immune system to overreact
Any substance capable of producing a type 1 allergic reaction.
an antigen, a substance capable of inducing allergy or specific hypersensitivity.
A substance that induces a specific immunological response that may lead to allergic disease.
A substance that causes the body to react hypersensitively to it.
A substance or chemical capable of causing an allergic reaction.
The protein (antigen) that triggers an allergic reactionin an individual
Substance causing an allergic reaction in a person who is sensitive to that substance
A substance that provokes an allergic response.
A substance that acts as a trigger to cause an allergic reaction in the body.
Any substance that leads to allergies by starting an immune response. (See Immune System)
An antigenic substance capable of producing allergy (hypersensitivity)
a substance which causes an allergic reaction in some subjects.
A substance, such as a drug, pollen, or microorganism that may induce such symptoms as sneezing, itching, and skin rashes to exposed individuals that have abnormally high acquired sensitivity (an allergy) to the particular substance.
a substance capable of inducing allergy or hypersensitivity. It is also the purified protein(s) used to test hypersensitivity.
A substance which causes an allergic response in sensitive individuals. Allergens can be either natural, e.g., pollen, dust; or man made, e.g., perfume, cleaning agents .
A chemical or biological substance (e.g., pollen, animal dander, or house dust mite proteins) that induces an allergic state or reaction, characterized by hypersensitivity.
Allergens are proteins that do not belong to the human body and which can cause the formation of a certain type of antibody. These antibodies can result in an allergic response. Allergens include proteins from pollen, from animals such as cats, dogs and house dust mites, and from fungal spores. A person can be exposed to an allergen by breathing it in, by ingesting it or by coming into contact with it by touch or penetration through the skin.
A substance that your body mis-identifies as dangerous, causing an allergic reaction.
a substance that triggers an allergic reaction.
A substance that is foreign to the body and can cause an allergic reaction in certain people. For examples, pollen, dander, mold.
Any inanimate or living object that creates an allergic reaction in an animal.
A natural or manmade substance which is misidentified as harmful by some people's immune systems, leading to an allergic reaction.
An Allergen is a normal substance that causes an acute defensive reaction in a person's immune system. Allergies can be triggered by eating, touching or breathing in an allergen. Allergies are often associated with asthma, especially in children. 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.
A substance, usually a protein, that can cause an allergy or allergic reaction in the body.
A substance capable of producing an exaggerated or adverse reaction, such as sneezing, coughing, rash or irritation in sensitive individuals.
an agent or substance that stimulates an allergic or hypersensitivity reaction.
A substance that elicits an antibody response and is responsible for producing allergic reactions by inducing formation of IgE. IgE is one of a group of immune system mediators. IgE antibodies, when bound to basophiles in circulation or mast cells in tissue, cause these cells to release chemicals when they come into contact with an allergen. These chemicals can cause injury to surrounding tissue—the visible signs of an allergy. Fungal allergens are proteins found in either the mycelium or spores. Only a few fungal allergens have been characterized, but all fungi are thought to be potentially allergenic.
Substance (such as mold) that can cause an allergic reaction.
a substance that can produce a hypersensitive reaction in the body.
Any substance, such as pollen, that can cause an allergy. ( 6-13, 8-01)
A trigger that induces the immune response.
A substance that causes allergic reactions in people that are allergic allergic . The allergens that cause asthma symptoms are typically airborne substances.
An overreaction to an antigen in amounts that do not affect most people; often involves IgE antibodies
Anything (animal dander, pollen, or mold) that causes allergy symptoms.
A substance capable of inducing hypersensitivity or an allergic reaction.
Any substance that causes an allergy.
a substance which produces an allergic reaction when introduced into the body
An allergen is an antigen, usually protein, that elicits an allergic reaction in a previously sensitised person.
Any substance that causes allergies or triggers asthma, including dust mites, pollen, molds, pet dander, cockroach debris, and some foods or medications.
A foreign substance that leads to allergies by starting an immune response.
A foreign substance that triggers an allergic response in a susceptible person. Allergens are usually common items encountered in everyday life such as substances from insects, animals or plants (such as pollen).
a substance capable of causing an allergic reaction; for example pollens, moulds, animal dander, house dust mites foods, insect stings, medications, and natural latex.
A substance, usually a protein, which, when introduced into the body, makes it sensitive to that substance.
a substance such as a protein that induces an allergic reaction.
A substance capable of causing an allergic reaction because of an individual's sensitivity to that substance.
the substance that triggers an allergic reaction.
A substance that provokes an allergic reaction.
Foreign macromolecule which does not belong in the host body and which triggers an immune response.
something that causes an allergy.
An antigen responsible for producing allergic reactions by inducing IgE formation.
A substance (animal dander, pollen, dust mites, etc.) that may cause an allergic reaction in people who are sensitive to a particular allergen.
Any substance that produces an allergic reaction when introduced into the body.
a substance that causes an allergy.
Any substance that induces an allergy. Common allergens are smoke, dust, pollen, mold and animal dander.
A substance that causes an allergic reaction.
A substance that produces an allergic response in those people who have previously been exposed to, and become sensitive to that substance. These responses are independent of the amount or time of exposure. (See Irritant)
Substance that created allergic reaction.
An antigenic compound that produces a hypersensitivity response.
An antigen (molecule capable of being recognised by the immune system) that causes an allergic reaction.
Any substance that could potentially induce an allergic reaction is referred to as an allergen. Examples of these particles and their sizes include: harmful dust (.001 to 20 microns), pollens (7-100 microns), pet dander (0.5 -10 microns) and bacteria (.03 to 30 microns).
Substance that stimulates the body's immune system to produce IgE antibody proteins to counteract the allergen
A substance (such as a food or pollen) that your body perceives as dangerous and can cause an allergic reaction
A substance capable of causing allergy or hypersensitivity. Substances that may cause an allergic reaction in cats include pollens, certain foods, and flea saliva.
A substance that is capable of producing an allergic response in the body.
A substance capable of producing an allergic reaction.
An agent, e.g. pollen, dust, animal dander, that causes IgE-mediated hypersensitivity reactions.
An allergen is any substance (antigen), most often eaten or inhaled, that is recognized by the immune system and causes an allergic reaction.