| 释义 |
memory cell
memory celln. 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). memory cell
memory cell[′mem·rē ‚sel] (computer science) A single storage element of a memory, together with associated circuits for storing and reading out one bit of information. memory cellOne bit of memory. In dynamic RAM memory, a cell is made up of one transistor and one capacitor. In static RAM memory, a cell is made up of about five transistors. See memory chip.memory cell
memory cellA 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: cellmemory 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.LegalSeeMemoryFinancialSeememoryAcronymsSeemad cowThesaurusSeememory chip |