Pulmonary Alveolus, Illustration

Pulmonary Alveolus, Illustration

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Credit: Carol and Mike Werner/SCIENCE PHOTO LIBRARY

Caption: Cross-section of a pulmonary alveolus or air sac in the human lungs. Researchers have re-engineered the immune system protein properdin (green) to activate the Complement System, a component of the immune system. The altered properdin greatly increases the number of phagocytes (yellow) responding to the invasion of microbes such as Streptococcus pneumonia (blue). Labelled.

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Keywords: air sacs, alveoli, alveolus, annotated, artwork, bacteria, biochemical pathways, blood vessels, breathing, bronchioles, capillaries, capillary, circulatory system, complement system, genetic engineering, illustration, immune system, infographic, lungs, macrophage, medical research, microbes, phagocyte, pneumonia, properdin, protein, pulmonary, respiratory system, streptococcus pneumonia, surfactant, type iii cell

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