0 a substance that can cause an allergy (= condition of the body reacting badly to something) but is not harmful to most people -- （引起過敏反應的）變應原；過敏原
Some of the transcripts identified in this study are obvious choices, such as potential virulence factors, including proteases and various allergen-related proteins.
Pollens in the atmosphere, representing allergens, become pervasive during the springtime and early summer and are known to cause hay fever.
The author discusses both forms, pointing out that recognition and avoidance of irritants or allergens is an essential part of treatment.
There are, however, relatively few studies on chronic allergen exposure.
Immunologic responses following respiratory sensitization to house dust mite allergens in mice.
This form of therapy usually involves subcutaneous injections of gradually increasing doses of allergen extract during an induction or updosing phase.
In the late 1970s, allergen extracts with standardized contents of allergens were introduced and gradually replaced earlier, unspecified extracts.
Conceptually, it has appeal for patients who are extremely sensitive to more than one allergen from any given source.
