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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...
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Tissue Transplantation01:24

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Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
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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...
Immunological Memory01:23

Immunological Memory

Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
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Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature is...
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,...

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Related Experiment Video

Updated: Jun 19, 2026

Transduction and Expansion of Primary T Cells in Nine Days with Maintenance of Central Memory Phenotype
08:49

Transduction and Expansion of Primary T Cells in Nine Days with Maintenance of Central Memory Phenotype

Published on: March 18, 2020

A brief focus on memory cells in transplantation.

A Le Moine1, B Vokaer, L M Charbonnier

  • 1Medical Institute for Immunology, Université Libre de Bruxelles, 8 rue A Bolland, 6041 Gosselies, Belgium. alemoine@ulb.ac.be

Transplantation Proceedings
|October 28, 2009
PubMed
Summary

Memory T cells are vital for fighting infections but can harm transplant recipients. Immunosuppressive drugs may increase these detrimental memory T cell responses, posing an immunological risk.

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Area of Science:

  • Immunology
  • Transplantation Science
  • Cellular Biology

Background:

  • T and B memory cells are essential for adaptive immunity against pathogens.
  • Alloreactive memory T cells are increasingly recognized for their detrimental impact in transplantation.
  • Induction therapies and immunosuppressive agents can cause T cell loss, potentially facilitating memory cell emergence.

Purpose of the Study:

  • To review clinical and experimental findings on the role of memory T cells in transplantation.
  • To highlight the immunological risks associated with enhanced T-cell memory responses post-transplant.
  • To discuss the impact of immunosuppressive strategies on T cell memory.

Main Methods:

  • Literature review of clinical and experimental observations.
  • Analysis of immunological data related to T and B memory cells.
  • Synthesis of evidence regarding immunosuppression and T cell memory.

Main Results:

  • Evidence suggests that immunosuppressive agents may promote the development of alloreactive memory T cells.
  • These enhanced memory T cell responses are linked to adverse outcomes in transplantation.
  • T cell loss induced by therapies can contribute to the rise of memory cells.

Conclusions:

  • Enhanced T-cell memory responses represent a significant immunological risk in transplantation.
  • Understanding the mechanisms behind memory cell generation is crucial for improving transplant outcomes.
  • Further research is needed to mitigate the negative effects of immunosuppression on T cell memory.