| allergen | <immunology> An antigenic substance capable of producing immediate type hypersensitivity reaction (allergy). (06 Oct 1997) |
|---|---|
| allergenic | Having the properties of an antigen (allergen). Synonym: allergenic, immunogenic. (05 Mar 2000) |
| allergenic extract | Extract (usually containing protein) from various sources, e.g., food, bacteria, pollen, and the like, suspected of specific action in stimulating manifestations of allergy; may be used for skin testing or desensitization. Synonym: allergic extract. (05 Mar 2000) |
| allergens | Antigenic substances capable of producing immediate-type hypersensitivity (hypersensitivity, immediate). (12 Dec 1998) |