memory cell


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memory cell

A cell derived from B or T lymphocytes that can quickly recognize a foreign antigen to which the body has been previously exposed. Memory T cells stimulate T helper lymphocytes and cytotoxic T cells; memory B cells stimulate the production of antigen-specific antibodies by B plasma cells. Both types of memory cells survive for years, providing a durable adaptive immune response against foreign antigens.
See also: cell

memory cell

(immunology) a LYMPHOCYTE that has had an initial exposure to a specific ANTIGEN and undergone limited proliferation, so that it will respond more quickly than an unprimed lymphocyte when subsequently exposed to that antigen. Such cells form the basis of immunological memory.

memory

the capacity to recall previously experienced sensations, information, data and ideas.

brain memory
the ability of the brain to use knowledge gained from past experience. This is essential for the process of learning by animals. The process is poorly understood, but its practical application is sophisticated, especially in dogs.
memory cell
an expanded clone of small lymphocytes derived from stimulated antigen-sensitive B and T lymphocytes. They have antigen receptors of the same specificity as the parent cell. Important in the secondary immune response.
immunological memory
the ability of the immune system to respond to more strongly and rapidly to the second and subsequent exposures to an antigen.
suture memory
a property of some synthetic fibers which encourages the spontaneous untying of knots—the 'memory' of the fiber is that it is a straight fiber.
References in periodicals archive ?
SONOS memory cells can also be easily integrated into generic logic platforms.
Also, the cell implementation allows the gate widths of the MOS transistors forming the cells to be decreased and the drive output MOS transistors to be reduced, making it possible to shrink the size of the memory cells and drive circuitry.
Andrea Burgalossi worked on the assumption that granule cells which receive electrical impulses can be 'un-silenced' and thus become memory cells.
The device is based on the principles of resistive memory, which can be used to create memory cells that are smaller, operate at a higher speed and offer more storage capacity than flash memory cells, the current industry standard.
Long-lived sentries called memory cells remain ready to pounce if the bug reappears.
Earlier research showed humans having cross-reactive memory cells to a wide range of H5N1 peptides despite any previous exposure to avian influenza A (H5N1).
Plasma cells produce antibodies to fight the perceived enemy, while memory cells mainly take note of the situation.
For months or even years, the immune system's memory cells refer back to the antigens for information on how to combat these bacteria or viruses.
Released from the thymus and exposed to the antigens of invaders, T cells become memory cells and respond only to future attacks by the same invader.
As a result, this technology prevents the passive detection of data remnants in stressed memory cells.