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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...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
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...
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...
Cell Diversity01:13

Cell Diversity

The concept of a cell started with microscopic observations of dead cork tissue by Robert Hooke in 1665. Hooke coined the term "cell" based on the resemblance of the small subdivisions in the cork to the rooms that monks inhabited, called cells. About ten years later, Antonie van Leeuwenhoek became the first person to observe the living and moving cells under a microscope. In the century that followed, the theory that cells represented the basic unit of life developed.
Multicellular organisms...

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Related Experiment Video

Updated: May 14, 2026

In Vitro Resident Memory CD8 T Cell Differentiation Using Epithelial Organoid-T Cell Co-culture System
09:48

In Vitro Resident Memory CD8 T Cell Differentiation Using Epithelial Organoid-T Cell Co-culture System

Published on: February 3, 2026

The smallest unit: effector and memory CD8(+) T cell differentiation on the single cell level.

Veit R Buchholz1, Patricia Gräf, Dirk H Busch

  • 1Institute for Medical Microbiology, Immunology and Hygiene, Technische Universität München Munich, Germany.

Frontiers in Immunology
|February 21, 2013
PubMed
Summary

CD8(+) T cell subsets offer immediate protection and lasting memory against infections. This review explores their development, diversification, and potential stem cell-like properties for therapeutic applications.

Keywords:
T memory stem cellmemory ontogenysingle cell fate mappingsingle cell resolutionsubset diversification

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Last Updated: May 14, 2026

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • CD8(+) T cell immune responses are crucial for immediate protection and long-term memory against infections.
  • Distinct effector and memory T cell subsets arise from naive T cells, but their developmental relationships are debated.
  • A novel memory T cell subset with stem cell-like features has been identified, offering therapeutic potential.

Purpose of the Study:

  • To review current models of memory T cell generation and subset diversification.
  • To discuss the concept of T cell stemness and its implications.
  • To highlight the role of single-cell monitoring in understanding T cell development.

Main Methods:

  • Literature review of developmental models of T cell subsets.
  • Discussion of T cell stemness and its characteristics.
  • Exploration of single-cell monitoring techniques in immunology.

Main Results:

  • Current models of T cell subset development are presented and discussed.
  • The potential of stem cell-like memory T cells for self-renewal and diversification is highlighted.
  • The importance of advanced techniques like single-cell monitoring for mapping T cell development is emphasized.

Conclusions:

  • Understanding T cell subset development and stemness is critical for advancing immunotherapy.
  • Stem cell-like memory T cells represent a promising target for treating chronic infections and cancers.
  • Further research utilizing single-cell technologies will elucidate T cell developmental trajectories and signaling pathways.