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Related Concept Videos

Immune Surveillance by NK Cells and Phagocytes01:25

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Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
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Differentiation of Common Myeloid Progenitor Cells01:15

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Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
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Cells of the Innate Immune Response01:28

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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.
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Related Experiment Video

Updated: Apr 15, 2026

Bone Marrow-derived Macrophage Production
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Macrophages: development and tissue specialization.

Chen Varol1, Alexander Mildner, Steffen Jung

  • 1The Research Center for Digestive Tract and Liver Diseases, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 64239, Israel.

Annual Review of Immunology
|April 12, 2015
PubMed
Summary
This summary is machine-generated.

Most tissue-resident macrophages develop before birth and sustain themselves through longevity, independent of ongoing blood cell production. These cells also specialize to integrate into host tissues, influencing tissue development and function.

Keywords:
macrophagesmonocyte fatestissue specialization

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Isolation of Murine Peritoneal Macrophages to Carry Out Gene Expression Analysis Upon Toll-like Receptors Stimulation
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Area of Science:

  • Immunology
  • Cell Biology
  • Tissue Homeostasis

Background:

  • Macrophages are critical myeloid immune cells residing in tissues.
  • They perform functions such as clearing cellular debris and orchestrating inflammation.

Purpose of the Study:

  • To review two major paradigm shifts in understanding tissue macrophage biology.
  • To highlight the origins, maintenance, and tissue-specific specialization of macrophages.

Main Methods:

  • Review of recent scientific literature.
  • Analysis of gene expression profiles and epigenetic signatures.

Main Results:

  • Tissue-resident macrophages are primarily established prenatally and self-renew, largely independent of adult hematopoiesis.
  • These macrophages are integral to host tissues, specializing based on local environmental cues.
  • Specialization is reflected in distinct gene expression and epigenetic profiles.

Conclusions:

  • Tissue macrophages are not merely immune sentinels but specialized tissue components.
  • Their prenatal origin and self-renewal capacity redefine their maintenance mechanisms.
  • Understanding macrophage specialization is key to comprehending tissue development and function.