A certain cell type has existed in the blood and tissue of its vertebrate host's immune system for over twenty years.One day,it recognizes a newly arrived antigen and binds to it,subsequently triggering a secondary immune response in the body.Which of the following cell types most accurately describes this cell?

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Quizplus · Accepted Answer

Memory cells are specialized immune cells that "remember" a specific antigen that they have encountered before, allowing for a faster and stronger immune response upon subsequent encounters with the same antigen. They can exist in the body for years or even decades, waiting for the opportunity to recognize and bind to their antigen. The fact that this cell type recognized a newly arrived antigen and triggered a secondary immune response suggests that it is a memory cell. Plasma cells are responsible for producing large amounts of antibodies in response to an antigen, while macrophages and neutrophils are involved in phagocytosis and killing of pathogens. Thyroid cells are not part of the immune system.

A Certain Cell Type Has Existed in the Blood and Tissue