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Encyclopædia Britannica Subscribe Log In · Join In the News Spotlight Demystified Quizzes Galleries Lists Search Britannica What are you looking for? Search Browse popular topics: Martin Luther King, Jr. Harlem Renaissance Open Door policy Mahatma Gandhi World War II Bacteria Written By: Kara Rogers, Robe
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Introduction to the Bacteria Bacteria are often maligned as the causes of human and animal disease (like this one, Leptospira, which causes serious disease in livestock). However, certain bacteria, the actinomycetes, produce antibiotics such as streptomycin and nocardicin; others live symbiotically in the guts of anim
About MicrobiologyLoginJoinSubmit GO All Content News Video Images Resources My Collections Submissions Tags Search MicrobeWorld HomeNewsVideoImagesResources About Microbiology  What is a Microbe?Types of MicrobesArchaeaVirusesBacteriaClassifications: What Difference Does it Make?Early OriginsWhat They Look LikeW
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Bacteria bacterium) constitute a large domain of prokaryotic microorganism s. Typically a few micrometre s in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth , and are present in most of its habitat s. Bacteria inhabit soil,



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