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Related Concept Videos

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...
T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
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...
Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...

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Related Experiment Video

Updated: May 25, 2026

Expansion and Enrichment of Gamma-Delta (γδ) T Cells from Apheresed Human Product
11:51

Expansion and Enrichment of Gamma-Delta (γδ) T Cells from Apheresed Human Product

Published on: September 22, 2021

Close link between development and function of gamma-delta T cells.

Kensuke Shibata1

  • 1Division of Host Defense, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan. k_shibata@bioreg.kyushu-u.ac.jp

Microbiology and Immunology
|February 4, 2012
PubMed
Summary

Murine gamma delta T cells are the first T cells to develop and are found in mucosal tissues, enabling rapid immune responses. Understanding their development and function is crucial for immunity, autoimmunity, and cancer research.

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Last Updated: May 25, 2026

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Published on: September 9, 2011

Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Murine gamma delta T cells are the earliest T cell lineage, developing in the fetal thymus.
  • They are predominantly found in mucosal tissues like the lung, skin, and intestine.
  • Their unique localization allows for prompt responses to pathogens and inflammation.

Purpose of the Study:

  • To review the current understanding of gamma delta T cell development and function.
  • To highlight their role in innate and acquired immunity.
  • To emphasize the clinical importance of understanding gamma delta T cell regulation.

Main Methods:

  • This review synthesizes recent evidence on gamma delta T cell programming and function.
  • It examines their influence on immune responses in various tissues.
  • The review discusses their role in autoimmune disorders and tumor development.

Main Results:

  • Effector gamma delta T cell subsets producing IFN-γ, IL-4, and IL-17 are generated in the thymus.
  • These cells are crucial for rapid responses to pathogens and tissue damage.
  • Gamma delta T cells modulate autoimmune pathogenesis and tumor development.

Conclusions:

  • Gamma delta T cells possess unique developmental and distribution characteristics.
  • Their functions are integral to both innate and adaptive immunity.
  • Further understanding of gamma delta T cell mechanisms is clinically significant for immune regulation.