DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY
Macrophotograph (filtered) of Penicillium roqueforti, an economically important penicillin fungus used in the manufacture of blue cheeses. The deep blue regions in this photograph are the reproductive bodies of the fungus, or the spores, and the pale blue, threadlike regions are the hyphae, or vegetative structure.
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