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**'Sulfa granules' at centre - gram-positive branching rods
 
**'Sulfa granules' at centre - gram-positive branching rods
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====Botryomycosis====
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====[[Botryomycosis]]====
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*Caused by [[Staphylococcus spp.|''Staphylococcus aureus'']]
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*Occurs in horses and pigs usually due to wounds
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*Lowgrade persistent infection -> granulomatous lesions
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*Grossly:
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**Hard nodules with fibrous capsule in muscles
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**Contain yellow-brown pus and granules
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*Histologically:
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**Encapsulated granulomatous lesions
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**Central club colonies
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**Staphylococci are present
       
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