A cell that can recall previous contact with a particular antigen so that subsequent exposure leads to a more rapid and more effective immune response than the first encounter is by definition which type of cell?

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Quizplus · Accepted Answer

Memory lymphocytes are a type of white blood cell that "remembers" previous exposure to a particular antigen and can mount a faster and stronger immune response upon subsequent exposure. They are critical for developing immunity to infectious agents and for the effectiveness of vaccines. Effector lymphocytes are a type of immune cell that actively fights against an antigen during an immune response, but they do not have the ability to "remember" previous exposure like memory lymphocytes do. Plasma cells are a type of B cell that produce and secrete large amounts of antibodies, which can help fight off infections, but they do not have the ability to "remember" previous exposure. Stem cells are precursor cells that can develop into different types of cells, including immune cells like lymphocytes, but they do not have the ability to "remember" previous exposure.

A Cell That Can Recall Previous Contact with a Particular