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Related Experiment Videos

Cords, channels, corridors and conduits: critical architectural elements facilitating cell interactions in the lymph

J E Gretz1, A O Anderson, S Shaw

  • 1Human Immunology Section, National Cancer Institute, National Institutes of Health, Bethesda Maryland 20892-1360, USA.

Immunological Reviews
|April 1, 1997
PubMed
Summary

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The lymph node paracortical cord

Area of Science:

  • Immunology
  • Cell Biology
  • Anatomy

Background:

  • The lymph node cortex is crucial for T cell-antigen interactions.
  • The paracortical cord's structure and function remain poorly understood.
  • This cord is the functional unit of the lymph node cortex.

Purpose of the Study:

  • To review the anatomical spaces within the lymph node paracortical cord.
  • To describe the cellular barriers defining these spaces.
  • To discuss how this structure influences T cell surveillance.

Main Methods:

  • Review of existing literature on lymph node anatomy and T cell trafficking.
  • Analysis of the spatial organization of the paracortical cord.
  • Description of cellular components and their arrangement.

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Main Results:

  • The paracortical cord contains distinct spaces: high endothelial venule (HEV) lumen, perivenular channels, corridors, and cortical sinus.
  • A conduit system facilitates soluble factor transport.
  • Cellular barriers include high endothelium, fibroblastic reticular cells, and sinus-lining cells.

Conclusions:

  • Understanding the paracortical cord's spaces and cellular boundaries is key to comprehending T cell surveillance.
  • The described anatomical features facilitate efficient immune cell interactions and fluid transport.
  • This review provides a framework for future research into lymph node function.