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Related Concept Videos

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...
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...

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Related Experiment Video

Updated: Jul 8, 2026

Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance
14:01

Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance

Published on: July 22, 2011

Special regulatory T cell review: The suppression problem!

Herman Waldmann1

  • 1Sir William Dunn School of Pathology, Oxford University, Oxford, UK. herman.waldmann@path.ox.ac.uk

Immunology
|December 25, 2007
PubMed
Summary

T-cell mediated suppression concepts from 30 years ago were often overstated. Recent discoveries of regulatory T cells require careful re-evaluation of historical findings in immunology.

Area of Science:

  • Immunology
  • Cellular Immunology
  • Immune Regulation

Background:

  • The historical concept of T-cell mediated suppression emerged over three decades ago.
  • Early claims regarding T-cell suppression faced scrutiny and were not consistently validated over time.
  • Recent resurgence in the study of suppression phenomena and regulatory T cells has divided the scientific community.

Observation:

  • Immunologists have exhibited polarized reactions to the rediscovery of T-cell suppression.
  • Some view the renewed focus on suppression as detrimental to the field's reputation.
  • Others are actively engaged, exploring novel methodologies to understand these mechanisms.

Findings:

  • A significant portion of historical T-cell suppression claims appear to have been exaggerated.

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In Vitro Functional Analysis of Regulatory T cells: Focus On Proliferation And Differentiation

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Related Experiment Videos

Last Updated: Jul 8, 2026

Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance
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Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance

Published on: July 22, 2011

Generation of Human Chimeric Antigen Receptor Regulatory T Cells
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Generation of Human Chimeric Antigen Receptor Regulatory T Cells

Published on: January 3, 2025

In Vitro Functional Analysis of Regulatory T cells: Focus On Proliferation And Differentiation
10:21

In Vitro Functional Analysis of Regulatory T cells: Focus On Proliferation And Differentiation

Published on: June 9, 2026

  • Past research in this area may have lacked rigorous scientific discipline.
  • Distinguishing valid historical findings from overstated claims necessitates careful replication of older experiments.

    • Implications:

    • The field of immunology must critically reassess past research on T-cell suppression.
    • Accurate understanding requires distinguishing between robust and unsubstantiated historical data.
    • Future research should prioritize rigorous methodology and evidence-based conclusions in immune regulation studies.