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Bacteria infecting a macrophage, SEM

Bacteria infecting a macrophage, SEM


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Bacteria infecting a macrophage, SEM

Bacteria infecting a macrophage. Coloured scanning electron micrograph (SEM) of Mycobacterium tuberculosis bacteria (purple) infecting a macrophage white blood cell. The macrophage, when activated, will engulf (phagocytose) the bacteria and destroy them as part of the bodys immune response. M. tuberculosis causes the disease tuberculosis. It infects the lungs creating primary tubercles, nodular lesions of dead tissue and bacteria. The bacteria may enter the blood or lymph systems and spread to other organs of the body. Tuberculosis is spread by coughs and sneezes

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

Media ID 6285134

© SCIENCE PHOTO LIBRARY

Bacteria Bacterium False Colour Immune Response Immunology Infecting Macrophage Magnified Image Microscopic Subjects Mycobacterium Tuberculosis Pathogenic Phagocytosis System Tuberculosis White Blood Cell Cells False Coloured Micro Biology Microbiological Pathogen


EDITORS COMMENTS
This coloured scanning electron micrograph (SEM) showcases the intricate interaction between Mycobacterium tuberculosis bacteria and a macrophage white blood cell. The purple-hued Mycobacterium tuberculosis bacteria are seen infecting the macrophage, a crucial component of our immune system. Macrophages, when activated, are responsible for engulfing and destroying foreign invaders such as bacteria as part of the body's natural immune response. However, M. tuberculosis, the bacterium that causes tuberculosis, has developed strategies to evade the macrophage's defenses and establish a persistent infection. Tuberculosis is a chronic bacterial infection that primarily affects the lungs, creating nodular lesions of dead tissue and bacteria, known as primary tubercles. The bacteria may then enter the blood or lymphatic systems, spreading to other organs of the body. Tuberculosis is primarily spread through the air, via coughs and sneezes. The coloured SEM image, captured using a scanning electron microscope, offers a magnified and false-coloured view of this microscopic battle between the immune system and a pathogenic bacterium. The false colours enhance the visualization of the bacterial structures and the macrophage cellular components, providing valuable insights into the complex interplay between these two entities. This image underscores the importance of understanding the intricacies of the immune response and the mechanisms by which pathogens evade it. The ongoing research in this area is crucial for the development of new diagnostic tools, treatments, and vaccines to combat tuberculosis and other infectious diseases.

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