Which of the Following Cell Types is Long Lived and Continues

Question

Which of the following cell types is long lived and continues to produce antibody?
A) Cytotoxic T cells
B) Memory B cells
C) T helper cells
D) Plasma cells
E) Macrophages

Accepted Answer

Memory B cells are long-lived cells that persist in the body after an infection has been cleared or a vaccination has been administered. They "remember" the specific antigens of pathogens they have encountered, allowing them to rapidly produce antibodies upon re-exposure to the same pathogens, thus providing long-term immunity.