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Antigen presentation, SEM C016 / 3105
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Antigen presentation, SEM C016 / 3105
Antigen presentation. Coloured scanning electron micrograph (SEM) showing the interaction between a macrophage (blue) and a T helper lymphocyte (Th cell, yellow), two components of the bodys immune system. Both are types of white blood cell. Macrophages are antigen-presenting cells (APCs). They present antigens (fragments on the surface of pathogens or foreign objects) to T lymphocytes, activating them. Each T lymphocyte recognises and binds to a specific antigen. Binding of the Th cell to the antigen presented by the macrophage activates the Th cell. This leads to its proliferation and the activation of other immune cells that eliminate the antigen. Magnification: x7000 when printed 10cm wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9202945
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Activating Activation Adaptive Immunity Antigen Colored Contact Defence Immune Immune Cell Immune System Immunity Immunological Immunology Interacting Interaction Leucocyte Leucocytes Leukocyte Leukocytes Macrophage Monocyte Presentation Presenting Specific Stimulating Stimulation System T Cell White Blood Cell Cells Cutouts
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This print titled "Antigen Presentation" showcases the intricate interaction between a macrophage and a T helper lymphocyte, two vital components of the body's immune system. In this colored scanning electron micrograph (SEM), we witness the dynamic connection between these white blood cells that play crucial roles in defending our bodies against pathogens. The blue-hued macrophage, an antigen-presenting cell (APC), is responsible for presenting antigens—fragments found on the surface of foreign objects or pathogens—to T lymphocytes. The yellow-colored T helper lymphocyte, also known as Th cell, recognizes and binds to specific antigens presented by macrophages. This binding process activates the Th cell, leading to its proliferation and triggering other immune cells' activation to eliminate the antigen. With a magnification of x7000 when printed 10cm wide, this SEM image offers us a glimpse into the fascinating world of immunology and adaptive immunity. It highlights how different types of white blood cells work together harmoniously to protect our bodies from harmful invaders. Photographed by Steve Gschmeissner from Science Photo Library, this image beautifully captures both scientific precision and artistic appeal. It serves as a reminder of the complexity and resilience inherent in our immune system while offering insights into medical research and advancements aimed at understanding and harnessing its power for improved healthcare outcomes.
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