Substances which cause allergic reactions These may be plant pollens, dust mites, animal dander, foods, insect venom, antibiotics or substances such as latex and rubber
substances that cause manifestations of allergy (these may or may not be antigens)
Substances that activate the immune system and cause an allergic response; may not be directly antigenic themselves but may make other materials antigenic
substances that trigger allergic reactions or asthma attacks, such as dust mites, pollen, molds, pet dander, cockroach debris, and some foods or medications