noun. a typically undamaging compound that is able of yielding an irregular immune reaction in an allergic person. Allergens come in the form of food, household dust particles, pet dander, plant pollen, or tissues of other living things.
noun. a typically undamaging compound that is able of yielding an irregular immune reaction in an allergic person. Allergens come in the form of food, household dust particles, pet dander, plant pollen, or tissues of other living things.