Wednesday, October 27, 2010

Pathogens

View ImagePathogenic viruses are mainly those of the families of: Adenoviridae, Picornaviridae, Herpesviridae, Hepadnaviridae, Flaviviridae, Retroviridae, Orthomyxoviridae, Paramyxoviridae, Papovaviridae, Polyomavirus,Rhabdoviridae, Togaviridae.


















View ImageBacteria are harmless or beneficial, a few pathogenic bacteria can cause infectious diseases.












View Image

Fungi comprise a eukaryotic kingdom of microbes that are usually saprophytes but can cause diseases in humans, animals and plants.





























Protists are a diverse group of eukaryotic microorganisms.








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