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    cd4 cell

    cd4 cell - Dictionary definition and meaning for word cd4 cell

    Definition
    (noun) 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

Word used in video below:
text: a plant cell has a membrane and a cell wall.
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