Macrophages in lung

Macrophages in lung

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Caption: Coloured scanning electron micrograph (SEM) of two macrophages in a human lung. The macrophage at top is in its normal spherical shape, covered with ruffles. The one beneath it has elongated itself to engulf the small, round particle at left. Macrophages clear the lungs of dust, pollen, bacteria & some components of tobacco smoke, but they are vulnerable to some toxic pollutants & their destruction can give rise to pulmonary diseases. In cases of asbestosis & mesothelioma (a type of lung cancer) the macrophages are impaled & destroyed by fine, sharp, and virtually indestructible needles of asbestos. Magnification unknown.

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Keywords: anatomy, cells, cytology, defence, false-coloured, histology, human, human body, images, immune, immune system, immunology, in lung, lung, macrophage, magnified image, microscopic photos, response, scanning electron micrograph, sem, subjects, system, white blood cells

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