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Host invasion by microorganisms (view source)

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==Structure==

[[Image:Bacteria structure.jpg|thumb|right|150px|Bacteria Structure - B. Catchpole, RVC 2008]]

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Bacteria offer the immune system a greater range of foreign components with which to be recognized, including:

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*Flagellum

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*Pili

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*Capsule

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*Cellular components: membrane, cell sap containing enzymes, genetic material, cell wall

==Replication==

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The lifespan of bacteria differs from that of viruses in that it includes a colonization phase

==Prevention and control==

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