a cell that remains after the body mounts an immune
response to an antigen and is capable of an immediate response to the
reappearance of the same antigen. Memory cells include certain subsets
of T-cells (CD4 and CD8) and some B-cells.
Memory CellsJAMA A subset of T lymphocytes that have been exposed to specific antigens and can then proliferate (ie, reproduce) on subsequent immune system encounters with the same antigen. See also Antigen; T Cells.
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