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Related Concept Videos

Cells of the Innate Immune Response01:28

Cells of the Innate Immune Response

The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
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Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
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Special Features of Adaptive Immunity01:20

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Cells of the Adaptive Immune Response01:23

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The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...

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Related Experiment Video

Updated: May 12, 2026

Purification and Expansion of Mouse Invariant Natural Killer T Cells for in vitro and in vivo Studies
08:37

Purification and Expansion of Mouse Invariant Natural Killer T Cells for in vitro and in vivo Studies

Published on: February 15, 2021

NK cells in immunotolerant organs.

Haoyu Sun1, Cheng Sun, Zhigang Tian

  • 1Institute of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, China.

Cellular & Molecular Immunology
|April 9, 2013
PubMed
Summary

Natural killer (NK) cells are key immune cells in immunotolerant organs like the liver, uterus, and lung. This review explores their roles in maintaining self-homeostasis and their contribution to organ-specific diseases.

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Area of Science:

  • Immunology
  • Organ Biology
  • Cellular Biology

Background:

  • Certain organs, including the liver, uterus, and lung, exhibit inherent immunotolerant characteristics crucial for maintaining the body's internal balance (self-homeostasis).
  • These organs host a significant population of immune cells with regulatory functions, particularly natural killer (NK) cells, which are abundant lymphocytes.
  • The presence and function of these NK cells are increasingly recognized as vital for immune tolerance within these specific organs.

Purpose of the Study:

  • To comprehensively review the distribution, differentiation, and phenotypic and functional characteristics of NK cells within immunotolerant organs.
  • To examine the impact of the local microenvironment on NK cell behavior in these organs.
  • To elucidate how these NK cell properties and microenvironmental influences contribute to the development of organ-specific diseases.

Main Methods:

  • Literature review focusing on studies investigating natural killer cells in the liver, uterus, and lung.
  • Analysis of research on immune cell populations and their regulatory functions in specific organ systems.
  • Synthesis of data regarding the influence of local tissue microenvironments on immune cell phenotypes and functions.

Main Results:

  • Natural killer cells are a major lymphocyte subset in immunotolerant organs, playing a significant role in immune regulation.
  • The distribution, differentiation, and function of NK cells vary across different immunotolerant organs.
  • Local microenvironmental factors within these organs profoundly influence NK cell characteristics and activity.

Conclusions:

  • Natural killer cells are critical mediators of immune tolerance in organs such as the liver, uterus, and lung.
  • Understanding the specific roles and regulation of NK cells in these organs is essential for comprehending self-homeostasis.
  • Dysregulation of NK cells within these microenvironments may contribute to the pathogenesis of various organ-specific diseases, highlighting potential therapeutic targets.