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Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...
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Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
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Viruses are unique biological entities that blur the boundary between living and non-living systems. Although they lack cellular structure and metabolic processes, they can exhibit characteristics of life when infecting a host. Their defining feature is a nucleic acid core, composed of either DNA or RNA, encapsulated within a protein coat called a capsid. This simple structure allows them to invade host cells and use their machinery for replication efficiently.Viral Structure and...
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Related Experiment Video

Updated: Apr 1, 2026

Isolation and Quantification of Epstein-Barr Virus from the P3HR1 Cell Line
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EBV Persistence--Introducing the Virus.

David A Thorley-Lawson1

  • 1School of Medicine, Tufts University, Boston, MA, 02111, USA. david.thorley-lawson@tufts.edu.

Current Topics in Microbiology and Immunology
|October 2, 2015
PubMed
Summary

The Epstein-Barr virus (EBV) persists lifelong in memory B cells via the germinal center model (GCM). This model explains EBV

Area of Science:

  • Virology
  • Immunology
  • Cell Biology

Background:

  • Epstein-Barr virus (EBV) establishes persistent infections.
  • The germinal center model (GCM) is the primary explanation for EBV's complex biology.
  • EBV infects B lymphocytes, mirroring their lifecycle.

Purpose of the Study:

  • To introduce the germinal center model (GCM) of Epstein-Barr virus (EBV) persistence.
  • To detail the lifecycle of EBV within the host.
  • To explain the mechanisms of EBV's lifelong, quiescent infection.

Main Methods:

  • The study describes the EBV lifecycle using the GCM framework.
  • It details viral entry, replication, and persistence mechanisms.
  • Mathematical modeling concepts are used to describe stability.

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Related Experiment Videos

Last Updated: Apr 1, 2026

Isolation and Quantification of Epstein-Barr Virus from the P3HR1 Cell Line
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Isolation and Quantification of Epstein-Barr Virus from the P3HR1 Cell Line

Published on: September 28, 2022

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Establishment of Epstein-Barr Virus Growth-transformed Lymphoblastoid Cell Lines
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Establishment of Epstein-Barr Virus Growth-transformed Lymphoblastoid Cell Lines

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Arbovirus Infections As Screening Tools for the Identification of Viral Immunomodulators and Host Antiviral Factors
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Main Results:

  • EBV infects naive B cells, activating a growth program.
  • Infected cells migrate to germinal centers (GCs) and adopt a default program for memory cell entry.
  • Quiescent EBV persists in memory B cells, with occasional reactivation and shedding.

Conclusions:

  • The GCM provides a comprehensive explanation for EBV persistence.
  • EBV's lifecycle ensures lifelong infection, largely invisible to the immune system.
  • The model highlights the stability of EBV persistence as a mathematical fixed point.