allergenic extract

allergenic extract or allergic extract

n.

An extract of allergenic components that usually contains protein, is prepared from various sources, and is used to test for an allergy or for desensitization.

---

allergenic extract,

a protein-containing extract purified from a substance to which a person may be sensitive. The extract may be used for diagnosis or for hyposensitization therapy.

---

extract [ek´strakt]

a concentrated preparation of a vegetable or animal drug.

allergenic extract an extract of allergenic components from a crude preparation of an allergen, such as weed, grass, or tree pollen, molds, house dust, or animal dander, used for diagnostic skin testing or for immunotherapy for allergy.

cell-free extract the solution obtained by rupturing cells and removing all particulate matter.