What cells are chiefly concerned with the production and secretion of antibodies?

What cells are chiefly concerned with the production and secretion of antibodies?

• A. B lymphocytes
• B. T lymphocytes
• C. Neutrophils
• D. Monocytes

Answer: (A)

B lymphocytes are responsible for antibody production. When a B cell encounters its specific antigen and receives help from helper T cells, it becomes a plasma cell that secretes large amounts of antibodies (immunoglobulins). These antibodies circulate in body fluids to neutralize pathogens and mark them for destruction, which is the humoral immune response. T lymphocytes handle other aspects of immunity, such as coordinating cellular responses and killing infected cells, but they do not produce antibodies. Neutrophils and monocytes are primarily phagocytes that ingest pathogens and participate in innate immune responses, not antibody production.

B lymphocytes are responsible for antibody production. When a B cell encounters its specific antigen and receives help from helper T cells, it becomes a plasma cell that secretes large amounts of antibodies (immunoglobulins). These antibodies circulate in body fluids to neutralize pathogens and mark them for destruction, which is the humoral immune response.

T lymphocytes handle other aspects of immunity, such as coordinating cellular responses and killing infected cells, but they do not produce antibodies. Neutrophils and monocytes are primarily phagocytes that ingest pathogens and participate in innate immune responses, not antibody production.