Source:http://linkedlifedata.com/resource/umls/id/C0002092
MSH: Antigen-type substances that produce immediate hypersensitivity (HYPERSENSITIVITY, IMMEDIATE).,CSP: antigen or hapten capable of provoking an allergic response; post coordinate with appropriate source of allergen, ie, DOG or INSECT POISON.,NCI: A substance that elicits an allergic reaction.,CHV: a substance that causes an allergy,CHV: a substance that causes an allergy,NCI: A substance that causes an allergic response. Examples include pollen, molds, and certain foods.