University of Michigan - Ann Arbor

University of California, Davis

The study of viruses and virus like agents. It deals heavily in their structure, classification, evolution, method of infection, effects of infection and how to cure or treat the infections.

Virology

This system classifies viruses into families based on their genome type (DNA, RNA, single-stranded (ss), double-stranded (ds), etc.) and method of replication.
Viruses in each category behave similarly.
1. dsDNA viruses (e.g. Adenoviruses, Herpesviruses, Poxviruses)
2. ssDNA viruses (+ strand or "sense") DNA (e.g. Parvoviruses)
3. dsRNA viruses (e.g. Reoviruses)
4. (+)ssRNA viruses (+ strand or sense) RNA (e.g. Coronaviruses, Picornaviruses, Togaviruses)
5. (−)ssRNA viruses (− strand or antisense) RNA (e.g. Orthomyxoviruses, Rhabdoviruses)
6. ssRNA-RT viruses (+ strand or sense) RNA with DNA intermediate in life-cycle (e.g. Retroviruses)
7. dsDNA-RT viruses DNA with RNA intermediate in life-cycle (e.g. Hepadnaviruses)

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