In humoral immunity, which cells are involved?

• A. B cells only
• B. Helper T cells only
• C. Both B cells and helper T cells
• D. Neither B cells nor helper T cells

Answer: (C)

In humoral immunity, both B cells and helper T cells play crucial roles. B cells are the primary cells responsible for the production of antibodies, which are proteins that specifically target and neutralize pathogens, such as bacteria and viruses. When B cells encounter an antigen, they can differentiate into plasma cells that secrete large volumes of antibodies specific to that antigen.

Helper T cells, on the other hand, are essential for providing assistance to B cells during the immune response. They do this by recognizing antigens presented by antigen-presenting cells and then secreting cytokines that help activate B cells, enhancing their ability to proliferate and produce antibodies. This collaboration is vital for an effective humoral immune response.

This interaction between B cells and helper T cells highlights the interconnectedness of the immune system, particularly in the adaptive response, ensuring that the body can effectively combat a wide range of pathogens. In contrast, focusing solely on B cells or helper T cells neglects the critical partnership necessary for a robust humoral immunity.