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Related Experiment Video

Updated: Jan 20, 2026

Visualizing Lymph Node Structure and Cellular Localization using Ex-Vivo Confocal Microscopy
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Visualizing Lymph Node Structure and Cellular Localization using Ex-Vivo Confocal Microscopy.

Rafael M Rezende1, Mateus E Lopes2, Gustavo B Menezes2

  • 1Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School; rmachadorezende@bwh.harvard.edu.

Journal of Visualized Experiments : Jove
|August 27, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a new method for imaging lymph nodes (LNs) using fluorescent antibodies. This technique allows researchers to visualize immune cell interactions within LNs without damaging tissue structures.

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Area of Science:

  • Immunology
  • Cell Biology
  • Microscopy

Background:

  • Lymph nodes (LNs) are critical sites where innate and adaptive immune responses converge.
  • Understanding immune cell composition and interactions within LNs is key to coordinating immune responses.
  • Current imaging techniques can damage delicate LN structures.

Purpose of the Study:

  • To develop a reproducible ex vivo whole lymph node imaging strategy.
  • To visualize cellular composition, distribution, and interaction within LNs.
  • To provide an alternative to conventional immunofluorescence microscopy that preserves tissue integrity.

Main Methods:

  • In vivo administration of fluorescent-labeled antibodies via subcutaneous injection.
  • Ex vivo imaging of draining lymph nodes using conventional confocal microscopes.
  • Utilizing stock reagents for a reproducible and accessible methodology.

Main Results:

  • Successfully labeled distinct immune cell populations within draining LNs.
  • Preserved LN tissue structures, avoiding damage associated with other methods.
  • Established an easy-to-perform and reproducible imaging protocol.

Conclusions:

  • The developed protocol enables detailed visualization of immune cell dynamics in lymph nodes.
  • This method enhances the understanding of local and systemic immune response coordination.
  • Offers a valuable tool for immunological research without compromising tissue architecture.