NAECB Practice Exam 2026 – Complete Study Resource

The lymphocytes responsible for producing antibodies against allergens, such as those from dust mites, are primarily B-lymphocytes. B-lymphocytes, when activated by the presence of an allergen, differentiate into plasma cells that secrete antibodies, specifically immunoglobulin E (IgE) in the case of allergic responses. IgE binds to allergens and is involved in mediating allergic symptoms by interacting with mast cells and basophils.

While Type 2 lymphocytes do play a role in the immune response to allergens by promoting the activation of B-lymphocytes and the class switching necessary for IgE production, they themselves do not produce the antibodies. Cytokines, while involved in signaling and orchestrating the immune response, do not directly produce antibodies. T-lymphocytes are important in cell-mediated immunity and in coordinating the adaptive immune response, but they do not produce antibodies themselves. Thus, the correct identification of B-lymphocytes highlights their crucial role in antibody production and the immune response to allergens.