DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY
Macrophotograph of colonies of the fungus Penicillium chrysogenum, which is used in commercial production of antibiotics. The photograph shows the mass of threadlike hyphae, or vegetative structure of the fungus and, less distinctly, the fruiting bodies or spores as the darker region at centre.
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