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Related Concept Videos

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Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
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Related Experiment Video

Updated: May 3, 2026

Protocols for Investigating the Host-tissue Distribution, Transmission-mode, and Effect on the Host Fitness of a Densovirus in the Cotton Bollworm
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28 days later: eosinophils stop viruses.

Paige Lacy1

  • 1UNIVERSITY OF ALBERTA.

Blood
|February 1, 2014
PubMed
Summary

Eosinophils, a type of white blood cell, protect mice from fatal respiratory virus infections. This study reveals their crucial role in antiviral defense mechanisms.

Area of Science:

  • Immunology
  • Virology
  • Cell Biology

Background:

  • Respiratory viruses pose significant threats to health.
  • The precise immune mechanisms conferring protection against severe viral infections are not fully understood.
  • Eosinophils are known for their role in allergic responses and parasite defense, but their function in viral infections is less clear.

Purpose of the Study:

  • To investigate the role of eosinophils in the host response to respiratory virus infection.
  • To determine if eosinophils contribute to protection against lethal viral challenge.

Main Methods:

  • The study utilized a mouse model of respiratory virus infection.
  • Eosinophil depletion and adoptive transfer experiments were performed.
  • Viral load, immune cell infiltration, and survival rates were assessed.

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Related Experiment Videos

Last Updated: May 3, 2026

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Main Results:

  • Mice lacking eosinophils exhibited increased susceptibility to lethal respiratory virus infection.
  • Depletion of eosinophils led to higher viral loads and exacerbated lung pathology.
  • Adoptive transfer of eosinophils restored protection against lethal infection.

Conclusions:

  • Eosinophils play a critical protective role in combating lethal respiratory virus infections in mice.
  • These findings highlight eosinophils as key players in antiviral immunity and suggest potential therapeutic avenues.