Question

allergy and asthma occurs due to which pollen grains ​

Answer 1

Explanation:

Airborne allergens derived from plant pollen are considered as the main aeroallergens and a major cause of type I hypersensitivities such as asthma and allergic rhinitis (4). Previous studies indicate that aeroallergens are responsible for about 63%, and pollen for more than 92%, of allergic rhinitis cases, (5, 6).

Answer 2

Answer:

Airborne allergens....

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