Viroids

A group of pathogens comprising the smallest known agents of infectious disease. They are unencapsulated and are capable of replicating autonomously in susceptible cells. Positively identified viroids composed of single-stranded RNA have been isolated from higher plants, but the existence of DNA viroids pathogenic to animals is suspected.

Year introduced: 1981

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Tree Number(s): B04.956

MeSH Unique ID: D014772

Entry Terms:

• Viroid

Previous Indexing:

• Plant Viruses (1971-1980)
• RNA, Viral (1971-1980)

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Organisms Category
Viruses
Viroids