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Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
Pathophysiology of Peptic Ulcer Disease: Mucosal Defense Factors01:24

Pathophysiology of Peptic Ulcer Disease: Mucosal Defense Factors

Peptic ulcer disease, commonly called PUD, represents a multifaceted condition characterized by disruptions in the lining of the gastrointestinal (GI)  tract. Central to the protection of the gastrointestinal lining is the mucosal-bicarbonate barrier. This physiological defense mechanism is a formidable shield against the corrosive effects of gastric acid and pepsin secretion in the stomach. Its role is pivotal in maintaining the structural integrity of the stomach's inner lining. Bicarbonate,...
Mucosal Barrier of the Stomach01:25

Mucosal Barrier of the Stomach

The gastric glands contain parietal cells that secrete hydrochloric acid (HCl) for digestion. The cells secrete HCl because it is highly corrosive and essential for breaking down food. To achieve this, they secrete hydrogen and chloride ions into the lumen of the gastric glands, which combine to form HCl.
Within parietal cells, carbonic acid is first formed through the reaction of water and carbon dioxide. The dissociation of carbonic acid releases bicarbonate and hydrogen ions. The bicarbonate...
Bacteriophages of the Human Virome01:23

Bacteriophages of the Human Virome

Bacteriophages are found throughout the human body. They may even outnumber eukaryotic viruses, forming an important and dynamic component of the human virome. Indeed, phages represent the most abundant viral entities, with densities in the gut reaching up to 10⁹ particles per gram of fecal matter, and many belonging to orders such as Caudovirales and Microviridae, while a substantial proportion remains unclassified as viral “dark matter.”Lysogeny and Genetic ExchangeIn the gut, bacteriophages...
Cytomegalovirus Disease01:27

Cytomegalovirus Disease

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Articles linked to this work by shared authors, journal, and citation graph.

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Immunoglobulin response in serum and secretions after immunization with live and inactivated poliovaccine and natural infection.

The New England journal of medicine·2010
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[Comments of the German Airway League and the German Respiratory Society to the US Food and Drug Administration (FDA)'s announcement from February 18th 2010 on the use of long acting beta-2 agonists in treatment of asthma].

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Developmental aspects of the mucosal immune system: role of external environment, mucosal microflora and milk.

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Related Experiment Video

Updated: Jul 21, 2026

Isolation of Lymphocytes from Mouse Genital Tract Mucosa
04:46

Isolation of Lymphocytes from Mouse Genital Tract Mucosa

Published on: September 3, 2012

Mucosal immunity and viral infections.

J Freihorst1, P L Ogra

  • 1Division of Pediatric Pulmonology and Neonatology, Medizinische Hochschule Hannover, Germany. freihorst.achim@mh-hannover.de

Annals of Medicine
|May 24, 2001
PubMed
Summary

The immune system fights viral infections using innate and adaptive responses, with secretory IgA antibodies crucial at mucosal sites. Future mucosal vaccines hold the most promise for controlling viral disease epidemiology.

Area of Science:

  • Immunology
  • Virology
  • Infectious Diseases

Background:

  • Mucosal surfaces are primary entry points for infectious agents, particularly respiratory and intestinal viruses.
  • Viral infections are countered by innate immune responses (cytokines, NK cells) and adaptive responses (T cells, antibodies).
  • Secretory IgA antibodies are vital for mucosal immunity against viral infections.

Purpose of the Study:

  • To review the immune system's mechanisms against viral infections at mucosal sites.
  • To highlight the role of secretory IgA antibodies in viral clearance and protection.
  • To discuss the potential of passive antibody transfer and future mucosal vaccines.

Main Methods:

  • This is a review of existing research on mucosal immunity and viral infections.

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Isolation of Lymphocytes from Mouse Genital Tract Mucosa
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Isolation of Lymphocytes from Mouse Genital Tract Mucosa

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Intranasal Administration of Recombinant Influenza Vaccines in Chimeric Mouse Models to Study Mucosal Immunity

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Protective Efficacy and Pulmonary Immune Response Following Subcutaneous and Intranasal BCG Administration in Mice

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  • The abstract synthesizes information on innate and adaptive immune responses.
  • It discusses the role of specific antibody types and future vaccine strategies.
  • Main Results:

    • Unspecific immune responses involve type 1 interferons and NK cell activity.
    • Specific responses rely on cytotoxic T cells and antibodies, with secretory IgA being key at mucosal sites.
    • Passive antibody transfer is a current strategy, while mucosal vaccines represent a future approach.

    Conclusions:

    • Secretory IgA antibodies are critical for managing viral infections at mucosal surfaces.
    • Passive antibody transfer offers therapeutic and prophylactic benefits.
    • Mucosal vaccines are anticipated to significantly impact the epidemiology of viral infections.