What is the role of plasma cells in the immune response?

• A. They recognize antigens
• B. They produce antibodies
• C. They assist T cells
• D. They stimulate other immune cells

Answer: (B)

Plasma cells play a crucial role in the immune response by producing antibodies. These specialized B lymphocytes are responsible for synthesizing and secreting large quantities of antibodies, which are proteins that specifically target and neutralize pathogens such as bacteria and viruses. Once a B cell encounters its specific antigen, it proliferates and differentiates into plasma cells. The antibodies produced can bind to the antigens, marking them for destruction by other components of the immune system and preventing their ability to infect cells. This antibody production is vital for providing immunity and contributing to the overall effectiveness of the adaptive immune response.