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Illustration showing alveoli in the human lung

Illustration showing alveoli in the human lung


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Illustration showing alveoli in the human lung

Illustration based on a scanning electron micrograph of macrophages fixed to the surface of alveoli (air sacs) in the human lung. Macrophages are monocytes (white cells) which have migrated from the blood to tissues, notably in the lymphatic system & lungs. They act as scavengers, engulfing foreign particulate matter by the process of phagocytosis. In addition, the macrophage deals with foreign (antigenic) substances during the initial phase of immune response. Antigens are presented on the surface of the macrophage so that they can be recognized & ultimately eliminated by specific lymphocytes

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6421202

© FRANCIS LEROY, BIOCOSMOS/SCIENCE PHOTO LIBRARY

Defence Immune Immunology Macrophage System Cells


EDITORS COMMENTS
This print showcases the intricate beauty of the human lung's alveoli, giving us a glimpse into the remarkable defense system that exists within our bodies. Based on a scanning electron micrograph of macrophages fixed to the surface of these air sacs, this illustration highlights their crucial role in safeguarding our respiratory health. Macrophages, derived from monocytes present in our blood, migrate to various tissues including the lymphatic system and lungs. Acting as diligent scavengers, they engulf foreign particles through phagocytosis. This process allows them to eliminate potentially harmful substances that could compromise our well-being. Moreover, macrophages play a vital part in initiating immune responses against antigens - foreign substances capable of triggering an immune reaction. By presenting these antigens on their surface, macrophages facilitate recognition by specific lymphocytes which ultimately leads to their elimination. The complexity and efficiency displayed by these cells are truly awe-inspiring. This image not only serves as a testament to the intricacies of human anatomy but also emphasizes the importance of maintaining a strong immune system for overall health and well-being. Science Photo Library has once again captured an extraordinary moment within our own bodies with this stunning photograph print – reminding us just how remarkable and resilient we are at defending ourselves from potential threats.

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