As the allergen enters through the nose or mouth, antigen cells analyze the allergen and present antigenic peptides to helper T cells. The helper T cells acquire a type 2 phenotype (Th2) and stimulate plasma cells to produce IgE due to the presence of specific cytokines. If Th2 is expressed too much, the symptoms of cat allergies appear. Inhaled cat allergens will activate mast cells, causing coughing, increased mucous production, and airway constriction.
Allergy to cats
Oral mite anaphylaxis
Poultry allergy
Insect sting allergy
Mosquito bite allergy
Shellfish allergy
Laboratory animal allergy
Dust mite allergy