Antibody - activate B cells. B Cells B cells divide,...

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Antibody-mediated Immunity Stages in this process are: 1. antigen detection 2. activation of helper T cells 3. antibody production by B cells Each stage is directed by a specific cell type. Macrophages Macrophages are white blood cells that continually search for foreign (nonself) antigenic molecules, viruses, or microbes. When found, the macrophages engulfs and destroys them. Small fragments of the antigen are displayed on the outer surface of the macrophage plasma membrane. Helper T Cells Helper T cells are macrophages that become activated when they encounter the antigens now displayed on the macrophage surface. Activated T cells identify and
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Unformatted text preview: activate B cells. B Cells B cells divide, forming plasma cells and B memory cells . Plasma cells make and release between 2000 and 20,000 antibody molecules per second into the blood for the next four or five days. B memory cells live for months or years, and are part of the immune memory system. The activation of T cells by the action of macrophages and interleukin-2 Antibodies Antibodies bind to specific antigens in a lock-and-key fashion, forming an antigen-antibody complex. Antibodies are a type of protein molecule known as immunoglobulins . There are five classes of immunoglobulins: IgG, IgA, IgD, IgE, and IgM....
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This note was uploaded on 11/29/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

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Antibody - activate B cells. B Cells B cells divide,...

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