memory cell

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memory cell

n.
A B cell or T cell that has developed during an initial immune response to an antigen and can be quickly activated upon subsequent exposure to the same antigen.

mem′ory cell`


n.
a long-lived cell of the immune system that has previously encountered a specific antigen and that upon reexposure produces large amounts of antibody (memory B cell) or rapidly initiates cell-mediated immunity (memory T cell).
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