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Helper T cell and B cell

Image Number: 20305B

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Caption:

Helper T cell (small cell) and B cell (large cell). Both cells are specialized immune response cells (lymphocytes). Helper T cells are derived from the thymus (as are killer T cells). The helper and killer T cells exit and pass back into the bloodstream, ready to battle antigens. B cells reach their full antigen-fighting potential in the lymph nodes and spleen where antigens (foreign material) are filtered. When Helper T cells detect the presence of specific antigens, they produce various secretions that signal other cells to multiply and attack. Helper T cells instruct B cells to start making antibody-producing plasma cells and memory B cells. Helper T cells also foster the production of cytotoxic / killer T cells. Helper T cells can also release interleukin which stimulates other T cells. B cells can also digest the foreign material.

Keywords:

| 20305B human body blood human white blood cell helper T cell B cell B lymphocyte B-lymphocyte antigen lymphocyte immune response interleukin lymph lymphatic leukocyte SEM |

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