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Related Concept Videos

Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

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...
Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
Lymphoid Cells and Tissues01:18

Lymphoid Cells and Tissues

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.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...

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Related Experiment Video

Updated: Jun 6, 2026

Visualizing Surface T-Cell Receptor Dynamics Four-Dimensionally Using Lattice Light-Sheet Microscopy
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The LTi cell, an immunologic chameleon.

Warren Strober1

  • 1NIH/NIAID, Bethesda, MD 20892, USA. wstrober@niaid.nih.gov

Immunity
|November 25, 2010
PubMed
Summary
This summary is machine-generated.

Lymphoid tissue inducer (LTi) cells are crucial for developing immune structures. Recent research reveals these cells have diverse forms, each performing distinct roles in immune responses.

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Last Updated: Jun 6, 2026

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09:24

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Published on: January 30, 2020

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Identification of Rare Antigen-Specific T Cells from Mouse Lungs with Peptide:Major Histocompatibility Complex Tetramers

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Area of Science:

  • Immunology
  • Developmental Biology

Background:

  • Lymphoid tissue inducer (LTi) cells are essential for forming secondary lymphoid organs.
  • The development and function of lymphoid structures are critical for adaptive immunity.

Discussion:

  • Vonarbourg et al. (2010) investigate the heterogeneity of LTi cells.
  • The study reveals that LTi cells exist in multiple functional states.
  • These distinct LTi cell populations are linked to specific roles in immune system development.

Key Insights:

  • LTi cells are not a monolithic population but exhibit functional diversity.
  • Different LTi cell subsets contribute uniquely to lymphoid organogenesis.
  • Understanding LTi cell heterogeneity is key to comprehending immune system construction.

Outlook:

  • Further research into LTi cell subsets could reveal new therapeutic targets.
  • Exploring the developmental pathways of LTi cell diversity may offer insights into immune disorders.
  • This work provides a foundation for dissecting the complex roles of LTi cells in immunity.