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20305C

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Image #   20305C
Name:   Helper T cell and B cell
Copyright:   Copyright 2000 Dennis Kunkel Microscopy, Inc.
Description:   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.
Magnification*: x2, 000
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   human body blood human white blood cell helper T cell B cell antigen lymphocyte immune response interleukin lymph lymphatic leukocyte SEM B-lymphocyte B lymphocyte 07.01.08 20305C helper T cells helper T lymphocyte helper T lymphocytes helper T-lymphocyte helper T-lymphocytes T cell

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