These consist of pollen, mold, dust mites, certain foods, latex, animal dander, and others. These allergens sensitize the nasal mucosal membrane through a sensitization process, which typically includes a few types of cell in our body, such as lymphocyte, mast and macrophage cell. In the start of the sensitization, allergens penetrate through the mucosal surface in our nasal passage.
The second step of the sensitization procedure is scavenging of the irritant by the macrophage cell. Macrophage cell is the huge scavenger cell in the blood, whose function is eating up antigen, which is from outside of our body. During the scavenging process, macrophage cells also pass information about