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Related Concept Videos

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...
Development of Immunocompetence01:22

Development of Immunocompetence

The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...
Immunological Memory01:23

Immunological Memory

Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature is...
Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.

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Related Experiment Video

Updated: Jun 3, 2026

Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals
06:46

Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals

Published on: January 5, 2016

HIV infection and specific mucosal immunity: workshop 4B.

S J Challacombe1, P L Fidel, S Tugizov

  • 1Department of Oral Medicine, Kings College London Dental Institute, London, UK. stephen.challacombe@kcl.ac.uk

Advances in Dental Research
|March 29, 2011
PubMed
Summary

Understanding mucosal immunity is key to preventing HIV transmission. Research shows progress in innate immunity, breast milk

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Collection, Isolation, and Flow Cytometric Analysis of Human Endocervical Samples
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Collection, Isolation, and Flow Cytometric Analysis of Human Endocervical Samples

Published on: July 6, 2014

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Last Updated: Jun 3, 2026

Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals
06:46

Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals

Published on: January 5, 2016

Collection, Isolation, and Flow Cytometric Analysis of Human Endocervical Samples
12:34

Collection, Isolation, and Flow Cytometric Analysis of Human Endocervical Samples

Published on: July 6, 2014

Area of Science:

  • Mucosal immunology and HIV pathogenesis
  • Innate and adaptive immune responses at mucosal surfaces

Background:

  • Most Human Immunodeficiency Virus (HIV) infections occur via mucosal epithelium.
  • Understanding mucosal immunity's role in HIV susceptibility and protection is crucial.
  • HIV infection can impair mucosal immunity, increasing susceptibility to other infections.

Purpose of the Study:

  • To address key issues in HIV acquisition, mucosal immunity, and vaccine development.
  • To review progress in understanding innate and adaptive immunity against HIV.
  • To discuss the antiviral properties of breast milk and the potential for a mucosal HIV vaccine.

Main Methods:

  • Workshop discussions and review of recent scientific information.
  • Comparative analysis of research on stratified squamous versus columnar epithelium.
  • Evaluation of studies on breast milk's antiviral activity and neutralizing antibodies.

Main Results:

  • Progress has been made in understanding HIV acquisition and mucosal immunity.
  • Innate immunity plays a significant role, but its homeostatic mechanisms require further investigation.
  • Studies show differences in breast milk's antiviral activity between transmitters and non-transmitters.
  • Advances in developing an oral mucosal HIV vaccine demonstrate proof of principle.
  • Neutralizing antibodies are critical for preventing mucosal HIV infection.

Conclusions:

  • Significant progress in HIV mucosal immunity research, yet many biological questions remain.
  • Further research is needed on stratified squamous epithelium and the application of innate immunity knowledge.
  • Developing effective mucosal HIV vaccines and understanding neutralizing antibody roles are key priorities.