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50.0 MB (3.3 MB compressed)
4460 x 3919 pixels
37.8 x 33.3 cm ⏐ 14.9 x 13.1 in (300dpi)
EYE OF SCIENCE / SCIENCE PHOTO LIBRARY EYE OF SCIENCE / SCIENCE PHOTO LIBRARY
Bifidobacteria, coloured scanning electron micrograph (SEM). Bifidobacteria are gram-positive anaerobic bacteria that live in the gastrointestinal tract, vagina and mouth. They have a unique hexose (sugar) metabolism, called the bifid shunt, which can be used as a diagnostic test for bifidobacteria because it is not found in other gram-positive intestinal bacteria. Bifidobacteria are probiotic friendly bacteria, which means that they may beneficially affect the host upon ingestion by improving the balance of the intestinal microflora. Magnification: x18,000 when printed at 10 centimetres across.
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