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CD4 cell

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Noun1.CD4 cell - T cell with CD4 receptor that recognizes antigens on the surface of a virus-infected cell and secretes lymphokines that stimulate B cells and killer T cells; helper T cells are infected and killed by the AIDS virus
T cell, T lymphocyte - a small lymphocyte developed in the thymus; it orchestrates the immune system's response to infected or malignant cells


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Since age exposes cells to increasing levels of stressors such as oxidative damage (aka "free radicals") that promote changes associated with cancer, the authors speculate that the strategy of maintaining CD4 cell numbers by increasing the life spans of individual cells rather than by promoting proliferation of new cells may be a safeguard of sorts against tumor development.
They use human CD4 cells to manufacture new copies of themselves and kill the CD4 cells in the process.
HIV testing and counselling is offered at the first prenatal visit and CD4 cell counts are done for those who test positive.
 
 
 
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