Helper virus

A helper virus is a

Hepatitis D virus, which requires Hepatitis B virus to coinfect cells in order to replicate. Helper viruses are also commonly used to replicate and spread viral vectors for gene expression and gene therapy.^[1]

References

^ Graham BS, Crowe JE, Ledgerwood JE (2007). "14 - Immunization Against Viral Diseases". In Knipe DM, Howley PM (eds.). Fields Virology (6 ed.). Wolters Kluwer Health. p. 403.

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[1] Graham BS, Crowe JE, Ledgerwood JE (2007). "14 - Immunization Against Viral Diseases". In Knipe DM, Howley PM (eds.). Fields Virology (6 ed.). Wolters Kluwer Health. p. 403.

[1]

v t e Microbiology: Virus
History Introduction Social history of viruses Virology
Components	Capsid Viral envelope Viral protein
Viral life cycle	Viral entry Viral replication Viral shedding Viroplasm Virus latency Lytic cycle Lysogenic cycle
Genetics	Antigenic drift Antigenic shift Phenotype mixing Reassortment Viral evolution
By host	Animal virus Bacteriophage Virophage Human virome Mycovirus Plant virus
Other	Antiviral drug Giant virus Helper virus Viral vector Helper dependent virus Laboratory diagnosis of viral infections Marine viruses Neurotropic virus Oncovirus Satellites Viral disease Viral load Virus-like particle Virus classification Virus quantification Virome Virosphere
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References