Pollen grains are released by trees, flowers and other plans with to fertilize other plants of the same species. An allergy to pollen is one of the most allergic reactions is the USA.
Type of Pollen Allergies
Exactly what do we know about tree pollen allergenicity? - The Lancet Respiratory Medicine
What Is Pollen
The 7 Different Types of Allergies
What Are the Worst Trees for Allergies?
API pollen: the 6 advantages of using it
Allergic rhinitis - Wikipedia
Bee Pollen: Does it Really Work for Allergies?
Allergy Doctor Philadelphia
When Is Allergy Season 2022 - Treating Seasonal Allergy Symptoms
The Worst Trees for Allergies - Turf Factory