CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
False-colour scanning electron micrograph (SEM) of a cluster of Alcaligenes ruhlandii, a type of Gram-negative bacterium. A. ruhlandii is one of those species of aerobic bacteria that are resistant to a number of antibiotic drugs. It is found in hospitals and causes localised infections in vulnerable, immunocompromised patients. Magnification: x2700 at 6x7cm size, x1350 at 35mm size.
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