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Related Concept Videos

Lymphoid Cells and Tissues01:18

Lymphoid Cells and Tissues

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Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
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Detailed Structure and Function of Lymph Nodes01:23

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Lymph nodes are bean-shaped structures that cluster along the lymphatic vessels in the inguinal, axillary, and cervical regions. Each node is divided into compartments by a capsule that extends trabeculae inward.
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Functions of the Lymphatic and Immune System01:28

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The lymphatic system plays a crucial role in bolstering our immune system. It consists of a network of lymphoid organs, lymph, and lymphatic vessels that provide structural and functional support in safeguarding the body against pathogens such as viruses and bacteria.
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Primary Lymphoid Organs01:16

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Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
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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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Development of the Lymphatic System01:15

Development of the Lymphatic System

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The development of lymphatic tissues and vessels in embryonic life begins around the fifth week. These structures originate from the mesoderm layer, with lymph sacs emerging from developing veins.
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Updated: Nov 23, 2025

Isolation of Murine Lymph Node Stromal Cells
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Isolation of Murine Lymph Node Stromal Cells

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Development and Immunological Function of Lymph Node Stromal Cells.

Natalia Barbara Pikor1, Hung-Wei Cheng1, Lucas Onder1

  • 1Institute of Immunobiology, Medical Research Center, Kantonsspital St. Gallen, CH-9007 St. Gallen, Switzerland; and.

Journal of Immunology (Baltimore, Md. : 1950)
|January 5, 2021
PubMed
Summary
This summary is machine-generated.

Stromal cells in lymphoid tissues actively shape immune responses through intricate communication. Their specific subsets, rather than new cell formation, regulate immune cell interactions during adaptive immunity.

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Area of Science:

  • Immunology
  • Cell Biology
  • Tissue Engineering

Background:

  • Stromal cells were traditionally considered passive structural components in lymphoid tissues.
  • Recent research highlights an active role for stromal cells in immune system organization.

Purpose of the Study:

  • To review advances in understanding the stromal cell infrastructure of lymph nodes.
  • To elucidate the mechanisms by which stromal cells regulate immune cell interactions.

Main Methods:

  • Review of recent genetic models.
  • Analysis of high-resolution transcriptomic data.
  • Examination of lymph node organogenesis and immune responses.

Main Results:

  • Stromal cells, including endothelial and fibroblastic subtypes, actively drive lymphoid niche maturation.
  • Distinct stromal cell subsets are strategically positioned to deliver specific factors to immune cells.
  • Changes in stromal cell activation states, not new differentiation, govern immune cell interactions.

Conclusions:

  • Stromal cells are critical regulators of lymphoid tissue architecture and function.
  • Understanding stromal cell niches is key to comprehending adaptive immune responses.
  • Targeting stromal cell activation may offer therapeutic strategies for immune modulation.