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noun, Immunology.
any small, long-lived lymphocyte that has previously encountered a given antigen and that on reexposure to the same antigen rapidly initiates the immune response (memory T cell) or proliferates and produces large amounts of specific antibody (memory B cell) the agent of lasting immunity.

A cell in the immune system that, when exposed to an invading pathogen, replicates itself and remains in the lymph nodes searching for the same antigen, resulting in a more efficient and rapid response to any subsequent attack.

Note: The creation of memory cells is one of the main goals of vaccination.


Read Also:

  • Memory engram

    memory engram n. An engram.

  • Memory farts

    jargon, humour The flatulent sounds that some MS-DOS box BIOSes (most notably AMI’s) make when checking memory at boot time. [Jargon File] (1994-11-02)

  • Memory hole

    noun a piece of one’s memory that seems to be missing; also, a place where lost memories seem to go Word Origin modeled upon black hole

  • Memory-lane

    noun 1. the memory of one’s past life likened to a road down which one may travel: The class reunion was a trip down memory lane.

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