Streptococcus bacteria

Streptococcus bacteria

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This image is part of the feature Bacteria Human Hybrids

Credit: DR KARI LOUNATMAA/SCIENCE PHOTO LIBRARY

Caption: Streptococcus pyogenes bacteria. Coloured trans- mission electron micrograph (TEM) of a section through Streptococcus pyogenes bacteria. The bacterium at lower centre is dividing into two cells by binary fission. Streptococcus pyogenes is a gram- positive, rounded or spherical (coccus) bacteria. Many humans may carry it harmlessly in their throat or nose. Pathogenic strains, however, cause skin infections such as impetigo, uterine infection after childbirth, and blood poisoning (septicaemia). They also cause a sore throat, tonsillitis and middle ear infections (otitis media) in children. Magnification: x57,000 at 6x7cm size. x200,000 at 10x8"

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Keywords: bacteria, bacterial, bacteriology, bacterium, binary fission, cause, cell division, disease causing, electron micrograph, gram-positive bacteria, impetigo, micro-organisms, microbe, microbes, microbiology, otitis media, pathogenic, scarlet fever, septicaemia, streptococcus pyogenes, tem, tonsillitis, transmission

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