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Cell-mediated Immune Responses

Cell-mediated Immune Responses

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Related Experiment Video

Updated: Jun 19, 2026

Generation of Lymph Node-fat Pad Chimeras for the Study of Lymph Node Stromal Cell Origin

Generation of Lymph Node-fat Pad Chimeras for the Study of Lymph Node Stromal Cell Origin

Published on: December 16, 2013

THE REGENERATION OF AUTOPLASTIC LYMPH NODE TRANSPLANTS.

H L Jaffe¹, M N Richter

¹Laboratory Division of the Hospital for Joint Diseases and the Pathological Laboratory of Bellevue Hospital, New York.

The Journal of Experimental Medicine

|October 30, 2009

Summary

The study shows that the reticulum is crucial for regenerating lymph nodes after transplantation in rats. Reticulum cells are key to producing new lymphocytes, ensuring node survival and function.

Area of Science:

Immunology
Regenerative Medicine
Histology

Background:

Lymph node transplantation is a model for studying tissue regeneration.
Understanding lymphocyte origins is vital for immune system research.

Purpose of the Study:

To investigate the role of the reticulum in lymph node regeneration after autoplastic transplantation.
To identify the primary source of lymphocytes in regenerated lymph nodes.

Main Methods:

Autoplastic transplantation of lymph nodes into the abdominal wall of albino rats.
Histological examination of regenerated lymph nodes at various stages.
Observation of cellular morphology and mitotic figures.

Main Results:

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Transplanted lymph nodes undergo necrosis, primarily affecting lymphocytes, with peripheral lymphocytes preserved.

Reticulum cells demonstrate resistance to degeneration and are the main source of new lymphocytes.

Lymphocyte production occurs directly from reticulum cells or via intermediate lymphoid cells.

The marginal sinus and hilus structures are preserved and functional in regenerated nodes.

Lymphocyte formation is also observed in surrounding connective tissue.

Conclusions:

The reticulum plays a pivotal role in lymph node regeneration by producing lymphocytes.
Preservation of the marginal sinus and hilus facilitates vascular and lymphatic connections.
Reticular origin of lymphocytes is a significant mechanism in immune tissue regeneration.