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Bacteroides fragilis

Introduction Bacteroides fragilis is a Gram negative pleomorphic rod shaped bacteria. It is an obligate anaerobic, non-spore forming, non-motile bacterium. Bacteroides fragilis is a normal inhabitant of human colon but if it is displaced and spread to other surrounding tissues or ...

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Purple Sulfur Bacteria

These are the group of anaerobic bacteria that are capable of photosynthesis. They may be Microaerophillic bacteria. These bacteria are divided into two groups i.e. the Chromatiaceae and the Ectothiorhodospiraceae. They are different in their internal membranes structure and presence ...

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Atypical bacteria

Atypical bacteria are those bacteria that don’t stain with the staining as they don’t contain cell wall. These are microscopic organisms, are prokaryotic and can be observed through a microscope. Examples: Chlamydiaceae, Mycoplasmataceae Characteristics ...

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Thermophilic bacteria

These are the bacteria that love to live in a high temperature. These bacteria can survive in hot temperature. Examples: Thermus aquaticus and Sulfolobus solfataricus Characteristics: The characteristics of Thermophilic bacteria are as follows: They can survive at extremely high temperature, such as ...

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