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| |pagetitle =Bacillus species | | |pagetitle =Bacillus species |
− | |pagebody = | + | |pagebody =''Bacillus'' species are large, Gram positive rods. They are mostly non-pathogenic, environmental organisms. |
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− | ===Overview===
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− | *Mostly non-pathogenic environmental organisms
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− | *''[[Bacillus anthracis]]'' causes anthrax
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− | *Anthrax is a severe disease affecting all mammals worldwide
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− | *Ruminants are highly susceptible to anthrax, dying of a septicaemic form
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− | *Pigs and horses are moderately susceptible, but carnivores are fairly resistant
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− | *''[[Bacillus licheniformis]]'' may cause shoradic abortions in cattle and sheep
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− | *''[[Bacillus cereus]]'' causes food poisoning in humans and mastitis in cows
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− | ===Characteristics===
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− | *Large, Gram positive rods
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− | *Produce endospores
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− | *Aerobes or facultative anaerobes
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− | *Grow on non-enriched media
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− | *Motile
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− | *Catalase positive, oxidase negative
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− | *''Bacillus anthracis'' colonies are up to 5mm diameter, flat, dry, grey, with a ground-glass appearance; curled outgrowths from the edge of the colony give a 'medusa head' appearance; non-haemolytic (differentiate from ''Bacillus cereus'')
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− | *''Bacillus licheniformis'' forms dull, rough, wrinkled colonies, with hair-like outgrowths
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− | *Biochemical tests for identification
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− | *Can often tolerate adverse environmental conditions
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− | *''CAR bacillus'' in [[Respiratory Bacterial Infections - Pathology#CAR bacillus|URT infection in cattle]] and [[Respiratory Bacterial Infections - Pathology#In Rabbits|URT infection in rabbits]]
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| [[Category:Bacteria]][[Category:Gram_positive_bacteria]] | | [[Category:Bacteria]][[Category:Gram_positive_bacteria]] |
| [[Category:Rods]] | | [[Category:Rods]] |
− | [[Category:To_Do_-_Bacteria]] | + | |
| + | [[Category:To_Do_-_AimeeHicks]][[Category:To_Do_-_Bacteria]] |