DR GARY GAUGLER / SCIENCE PHOTO LIBRARY DR GARY GAUGLER / SCIENCE PHOTO LIBRARY
Dairy bacteria. Coloured scanning electron micrograph (SEM) of Lactococcus sp. bacteria. These spherical, Gram-positive bacteria are found singly, in pairs, or in chains. They are used to make fermented dairy products, such as cheese. They produce lactic acid as a product of glucose fermentation. Magnification: x20,000 at 6x7cm size.
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